cube([servo_slot_z, servo_w + eps, servo_side_l + eps]);
// servo screw hole
- translate([-infty/2, servo_zoff + servo_w/2, servo_side_l/2 + wall])
+ translate([-infty/2, servo_zoff + servo_w/2, 0.6*servo_side_l + wall])
rotate([0, 90, 0])
cylinder(r = servo_screw_hole/2, h = infty, $fn = 6);