$fn = 50; difference(){ translate([0, 0, 0]) cube([8.75,65,2.75]); translate([0, 0, 0]) cube([8.75,5,1.5]); translate([4.375, 62, 0]) cylinder(h=3,r=1.5); } translate([4.375, 2, 1.35]) sphere(r=1);