// Spacer between kbd plate and pcb // ref: // plate thick: 1.3 // other spacer gap at edge: 3.7 screwDiam=2.2; eeWidth=5; thickness=3.7; $fn = 40; difference(){ cube([eeWidth, eeWidth, thickness * 2], center=true); translate([0, 0, -22]){ cylinder(d=screwDiam, 44); } translate([0, 0, -22]){ cube([44, 44, 44], center=true); } }