hull() for(x = [-1, 1]) Sx(x) {
Tx(d_out/2-top_beam_w/2)
cylinder(r = top_beam_w/2, h = clip_wall);
}
hull() for(x = [-1, 1]) Sx(x) {
hull() for(x = [-1, 1]) Sx(x) {
Tx(d_out/2-top_beam_w/2)
cylinder(r = top_beam_w/2, h = clip_wall);
}
hull() for(x = [-1, 1]) Sx(x) {