diff --git a/freecad/hifive-case-bottom-for-passive-cooling.fcstd b/freecad/hifive-case-bottom-for-passive-cooling.fcstd
new file mode 100644
index 0000000..5e3ed7d
Binary files /dev/null and b/freecad/hifive-case-bottom-for-passive-cooling.fcstd differ
diff --git a/stl/hifive-case-bottom-for-passive-cooling.stl b/stl/hifive-case-bottom-for-passive-cooling.stl
new file mode 100644
index 0000000..03bd1b9
Binary files /dev/null and b/stl/hifive-case-bottom-for-passive-cooling.stl differ