slotwidth = 11.5;
backslotmid2screwhole = 17;
slotplugheight = 5.5;
-slotplugshorterlen = 8;
-slotpluglongerlen = 18;
+slotplugshorterlen =10;
+slotpluglongerlen = 20;
slotslope = 11.0 / 18.5;
// "keepslot" refers to the screws in the wooden jig block
keepslotstartz = 20;
-keepslotlen = 25;
+keepslotlen = 18;
keepslotx = backslotedgespace / 2;
keepslotwidth = 4;