itx-aperture-grommet: fix

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/itx-aperture-grommet.scad b/itx-aperture-grommet.scad
index badb4ab196dfc09e195c90100fbaca496c5012cf..8bb22c385efca687b8837a0dc4d680c9db472b9a 100644 (file)
--- a/itx-aperture-grommet.scad
+++ b/itx-aperture-grommet.scad
@@ -26,7 +26,7 @@ screw_pos = real_all_sz - (screw_ctr_to_tr - 0.5 * app_slop * [1,1]);
 
 module GapPlan() {
   rectfromto([ wall_th, -1 ],
-            [ real_main_sz[0] - wall_th, real_ap_sz[1] - wall_th ]);
+            real_main_sz - wall_th * [1,1]);
 }
 
 module MainPlan() {