}
translate([-4.5 + y_delta, 0, real_len / 2]) cube([10, 10, 10], center = true);
translate([-11, 0, ybelt_hole_to_side + len]) {
}
translate([-4.5 + y_delta, 0, real_len / 2]) cube([10, 10, 10], center = true);
translate([-11, 0, ybelt_hole_to_side + len]) {