// calculated
+// Actual sizes (according to calipers) of things that fit
+// A
+// C - 1.88mm (M3 screw)
+// E - 2.97mm (3mm HSS bit shank)
+// G -
+// I - 3.15mm tight fit (Yale padlock from extra padlocks tray)
+// K - 3.33mm (M3.5 screw)
+
ly0 = -w/2 -lw;
difference(){