--- /dev/null
+include <yenyalib.scad>
+
+sdk = 12;
+d_in = 104;
+d_out = 140;
+wall = 1.2;
+h_out = 3;
+h_in = h_out + 8.5;
+out_angle = 60;
+thin_wall = 0.9;
+rib_angle = 60;
+rib_w = 5;
+rib_dist = 9;
+rib_off = 1;
+top_beam_w = 15;
+top_beam_h = 2;
+
+clip_wall = 3;
+clip_mid = clip_wall + 3;
+
+magnet_d = 10 + 0.5;
+magnet_h = 0.8 + 0.1;
+
+magnet_off = d_in/2 - 1.5*magnet_d;
+
+$fn = 256;
+
+difference() {
+ cylinder(r1 = d_out/2-h_out*cos(out_angle),
+ r2 = d_out/2,
+ h = h_out);
+ Tz(wall) cylinder(r1 = d_out/2-wall-h_out*cos(out_angle),
+ r2 = d_out/2-wall,
+ h = h_out);
+ Tz(-eps) cylinder(r = d_in/2-wall+eps, h = wall+2*eps);
+}
+
+difference() {
+ cylinder(r = d_in/2, h = h_in);
+ Tz(-eps) cylinder(r = d_in/2-wall, h = h_in + 2*eps);
+}
+
+difference() {
+ intersection() {
+ cylinder(r = d_in/2-wall/2, h = h_in);
+ union() {
+ for(i = [-d_in/2+rib_off:rib_dist:d_in/2]) Tx(i) Ty(-d_in/2) {
+ Tx(-rib_w/2) cube([rib_w, d_in, thin_wall]);
+ Tx(rib_w/2)Ry(-rib_angle) cube([h_in/cos(rib_angle), d_in, thin_wall]);
+ }
+ translate([-d_in/2, -top_beam_w/2, h_in-top_beam_h])
+ cube([d_in, top_beam_w, top_beam_h]);
+ }
+ }
+ for (x = [-1, 1]) Sx(x) Tx(magnet_off) Tz(h_in-magnet_h)
+ cylinder(r = magnet_d/2, h = magnet_h+eps);
+}
+
+Ty(d_out/2 + top_beam_w/2 + 5) difference() {
+ union() {
+ 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) {
+ Tx(d_in/2-top_beam_w/2)
+ cylinder(r = top_beam_w/2, h = clip_mid);
+ }
+ }
+ for (x = [-1, 1]) Sx(x) Tx(magnet_off) Tz(clip_mid-magnet_h)
+ cylinder(r = magnet_d/2, h = magnet_h+eps);
+
+}