X-Git-Url: http://challenge-bot.com/repos/?p=challenge-bot;a=blobdiff_plain;f=3d-printables%2Fwheel.scad;h=02dc054cec6297a1587047001d787f298560ba38;hp=4b806f44336c0843c6215484844539e6a440ca7e;hb=25c7a96655b6cd1716a03219c0a59fce97a3bfd9;hpb=2cfdf28fc31f513d87069e35f3f4388012ee9fba

diff --git a/3d-printables/wheel.scad b/3d-printables/wheel.scad
index 4b806f4..02dc054 100644
--- a/3d-printables/wheel.scad
+++ b/3d-printables/wheel.scad
@@ -114,7 +114,9 @@ module wheel_solid(radius,
   qr_size = 54;
   qr_height = 2;
   linear_extrude(height = qr_height){
-    square(qr_size, center = true);}
+    difference (){
+      square(qr_size, center = true);
+      square(1.5, center = true);}}
   translate([0, 0, qr_height]){
     motor_shaft_holder(shaft_radius,
                        shaft_flat_width,