diff --git a/.gitignore b/.gitignore
index f8324d9..575b869 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,18 @@
+# Apple
 .DS_Store
-*.xcf
+
+# Editor
 .*.swp
+
+# Build
 design/THREAD_TABLE.csv
+
+# Files not intended for repository
+*.xcf
+*.xlsx
+*.stl
+renderall*.scad
+ASME*.pdf
+docs/*.png
+design/UIS.py
+