- tread_radius){
- difference(){
- rim(radius, wall_width, width);
- translate([0, 0, width / 2]){
- tread(radius, tread_radius);}}
- qr_size = 54;
- qr_height = 2;
- linear_extrude(height = qr_height){
- square(qr_size, center = true);}
- translate([0, 0, qr_height]){
+ tread_radius) {
+ difference() {
+ rim(radius, wall_width * 2, width);
+ translate([0, 0, width / 2]) {
+ tread(radius, tread_radius); } }
+ linear_extrude(height = qr_height) {
+ difference() {
+ square(qr_size, center = true);
+ mounting_screw_flat(); } }
+ translate([0, 0, qr_height]) {