diff --git a/src/dactyl_keyboard/dactyl.clj b/src/dactyl_keyboard/dactyl.clj
index 816bff8..8f84fb6 100644
--- a/src/dactyl_keyboard/dactyl.clj
+++ b/src/dactyl_keyboard/dactyl.clj
@@ -656,8 +656,8 @@
     )))
 
 (defn screw-insert-all-shapes [bottom-radius top-radius height]
-  (union ; (screw-insert 0 0         bottom-radius top-radius height)
-         (screw-insert 0 1         bottom-radius top-radius height)
+  (union (screw-insert 0 0         bottom-radius top-radius height)
+         (screw-insert 0 lastrow   bottom-radius top-radius height)
          (screw-insert 3 lastrow   bottom-radius top-radius height)
          (screw-insert 3 0         bottom-radius top-radius height)
          (screw-insert lastcol 1   bottom-radius top-radius height)