Move mesh test options under G26 option

Marlin/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -954,6 +957,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   //#define UBL_G26_MESH_VALIDATION // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1688,18 +1697,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1721,7 +1718,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/G26_Mesh_Validation_Tool.cpp

@@ -619,12 +619,12 @@
 
     g26_extrusion_multiplier  = EXTRUSION_MULTIPLIER;
     g26_retraction_multiplier = RETRACTION_MULTIPLIER;
-    g26_nozzle                = DEFAULT_NOZZLE_SIZE;
+    g26_nozzle                = MESH_TEST_NOZZLE_SIZE;
     g26_filament_diameter     = DEFAULT_NOMINAL_FILAMENT_DIA;
-    g26_layer_height          = DEFAULT_LAYER_HEIGHT;
+    g26_layer_height          = MESH_TEST_LAYER_HEIGHT;
     g26_prime_length          = PRIME_LENGTH;
-    g26_bed_temp              = DEFAULT_BED_TEMP;
+    g26_bed_temp              = MESH_TEST_BED_TEMP;
-    g26_hotend_temp           = DEFAULT_HOTEND_TEMP;
+    g26_hotend_temp           = MESH_TEST_HOTEND_TEMP;
     g26_prime_flag            = 0;
 
     g26_ooze_amount           = parser.linearval('O', OOZE_AMOUNT);

Marlin/example_configurations/AlephObjects/TAZ4/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -974,6 +977,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1708,18 +1717,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1741,7 +1738,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/AliExpress/CL-260/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -954,6 +957,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1688,18 +1697,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1721,7 +1718,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/Anet/A6/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -1097,6 +1100,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1847,18 +1856,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1880,7 +1877,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/Anet/A8/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -960,6 +963,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1696,18 +1705,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1729,7 +1726,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/BQ/Hephestos/Configuration.h

@@ -139,6 +139,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -945,6 +948,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1679,18 +1688,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1712,7 +1709,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/BQ/Hephestos_2/Configuration.h

@@ -135,6 +135,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -955,6 +958,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1689,18 +1698,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1722,7 +1719,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         2.00 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/BQ/WITBOX/Configuration.h

@@ -139,6 +139,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -945,6 +948,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1679,18 +1688,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1712,7 +1709,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/Cartesio/Configuration.h

@@ -137,6 +137,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 3
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -953,6 +956,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1687,18 +1696,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1720,7 +1717,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/Creality/CR-10/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 1.75
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -964,6 +967,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   //#define UBL_G26_MESH_VALIDATION // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1698,18 +1707,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 1.75   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1734,7 +1731,7 @@
 //#define DEFAULT_STDDEV_FILAMENT_DIA 0.02  // Typical advertised for higher quality filament
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT        (DEFAULT_NOMINAL_FILAMENT_DIA+4*DEFAULT_STDDEV_FILAMENT_DIA) // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/Felix/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -936,6 +939,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1670,18 +1679,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1703,7 +1700,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/Felix/DUAL/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 2
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -936,6 +939,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1670,18 +1679,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1703,7 +1700,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/FolgerTech/i3-2020/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 1.75
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -959,6 +962,12 @@
   #define UBL_PROBE_PT_3_Y 25
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1693,18 +1702,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 #define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 1.75   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1726,7 +1723,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/Geeetech/GT2560/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 1.75
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -969,6 +972,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1703,18 +1712,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 1.75   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1736,7 +1733,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/Geeetech/I3_Pro_X-GT2560/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 1.75
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -954,6 +957,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1688,18 +1697,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 1.75   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1721,7 +1718,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/Infitary/i3-M508/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -958,6 +961,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1692,18 +1701,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1725,7 +1722,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/Malyan/M150/Configuration.h

@@ -141,6 +141,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -982,6 +985,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1716,18 +1725,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1749,7 +1746,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/Micromake/C1/basic/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -958,6 +961,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   //#define UBL_G26_MESH_VALIDATION // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1692,18 +1701,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1725,7 +1722,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/Micromake/C1/enhanced/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -958,6 +961,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   //#define UBL_G26_MESH_VALIDATION // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1692,18 +1701,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1725,7 +1722,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/RepRapWorld/Megatronics/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -954,6 +957,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1688,18 +1697,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1721,7 +1718,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/RigidBot/Configuration.h

@@ -139,6 +139,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1  // Single extruder. Set to 2 for dual extruders
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -952,6 +955,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1688,18 +1697,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1721,7 +1718,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/SCARA/Configuration.h

@@ -166,6 +166,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -966,6 +969,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1700,18 +1709,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1733,7 +1730,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/Sanguinololu/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 1.75
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -985,6 +988,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   //#define UBL_G26_MESH_VALIDATION // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1719,18 +1728,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 1.75   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1752,7 +1749,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/TinyBoy2/Configuration.h

@@ -158,6 +158,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 1.75
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -1010,6 +1013,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1744,18 +1753,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 1.75   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1777,7 +1774,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/Velleman/K8200/Configuration.h

@@ -156,6 +156,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -984,6 +987,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1718,18 +1727,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1751,7 +1748,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/Velleman/K8400/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -954,6 +957,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1688,18 +1697,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1721,7 +1718,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/Velleman/K8400/Dual-head/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 2
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -954,6 +957,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1688,18 +1697,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1721,7 +1718,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/adafruit/ST7565/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -954,6 +957,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1688,18 +1697,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1721,7 +1718,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/delta/FLSUN/auto_calibrate/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 1.75
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -1088,6 +1091,12 @@
   #define UBL_PROBE_PT_3_Y _PY(DELTA_PROBEABLE_RADIUS, 240)
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1822,18 +1831,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 1.75   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1855,7 +1852,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         1.95 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/delta/FLSUN/kossel_mini/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 1.75
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -1082,6 +1085,12 @@
   #define UBL_PROBE_PT_3_Y _PY(DELTA_PROBEABLE_RADIUS, 240)
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1815,18 +1824,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 1.75   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1848,7 +1845,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/delta/generic/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -1077,6 +1080,12 @@
   #define UBL_PROBE_PT_3_Y _PY(DELTA_PROBEABLE_RADIUS, 240)
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1810,18 +1819,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1843,7 +1840,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/delta/kossel_mini/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -1080,6 +1083,12 @@
   #define UBL_PROBE_PT_3_Y _PY(DELTA_PROBEABLE_RADIUS, 240)
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1813,18 +1822,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1846,7 +1843,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/delta/kossel_pro/Configuration.h

@@ -140,6 +140,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -1080,6 +1083,12 @@
   #define UBL_PROBE_PT_3_Y _PY(DELTA_PROBEABLE_RADIUS, 240)
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1813,18 +1822,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1846,7 +1843,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/delta/kossel_xl/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -1089,6 +1092,12 @@
   #define UBL_PROBE_PT_3_Y _PY(DELTA_PROBEABLE_RADIUS, 240)
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1822,18 +1831,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1855,7 +1852,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/gCreate/gMax1.5+/Configuration.h

@@ -141,6 +141,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 1.75
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -968,6 +971,12 @@
   #define UBL_PROBE_PT_3_Y 211
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1702,18 +1711,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 1.75   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .5    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .35   // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1735,7 +1732,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/makibox/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -957,6 +960,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1691,18 +1700,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1724,7 +1721,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/tvrrug/Round2/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -949,6 +952,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1683,18 +1692,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1716,7 +1713,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading

Marlin/example_configurations/wt150/Configuration.h

@@ -136,6 +136,9 @@
 // :[1, 2, 3, 4, 5]
 #define EXTRUDERS 1
 
+// Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
+#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE
 
@@ -959,6 +962,12 @@
   #define UBL_PROBE_PT_3_Y 20
 
   #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  #if ENABLED(UBL_G26_MESH_VALIDATION)
+    #define MESH_TEST_NOZZLE_SIZE     0.4   // (mm) Diameter of primary nozzle.
+    #define MESH_TEST_LAYER_HEIGHT    0.2   // (mm) Default layer height for the G26 Mesh Validation Tool.
+    #define MESH_TEST_HOTEND_TEMP   205.0   // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
+    #define MESH_TEST_BED_TEMP       60.0   // (°C) Default bed temperature for the G26 Mesh Validation Tool.
+  #endif
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
@@ -1693,18 +1702,6 @@
 // With this option servos are powered only during movement, then turned off to prevent jitter.
 //#define DEACTIVATE_SERVOS_AFTER_MOVE
 
-/**
- * Default extrusion settings
- *
- * These settings control basic extrusion from within the Marlin firmware.
- *
- */
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.00   // (mm) Diameter of the filament generally used (3.0 or 1.75mm), also used in the slicer. Used to validate sensor reading.
-#define DEFAULT_NOZZLE_SIZE           .4    // (mm) Diameter of primary nozzle.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_LAYER_HEIGHT          .2    // (mm) Default layer height that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_HOTEND_TEMP        205.0    // (c)  Default nozzle temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-#define DEFAULT_BED_TEMP            60.0    // (c)  Default bed temperature that will produce usable results by the printer.  Used by G26 Mesh Validation Pattern tool.
-
 /**
  * Filament Width Sensor
  *
@@ -1726,7 +1723,7 @@
 //#define FILAMENT_WIDTH_SENSOR
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
-  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
+  #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
   #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading