--- /dev/null
+include <yenyalib.scad>
+
+base_wall = 3;
+rod_d = 5 + 0.5;
+d_max = 40;
+d_min = 15;
+steps = 3;
+
+difference() {
+ cylinder(r = d_max/2+base_wall + rod_d/2, h = base_wall, $fn = 6);
+ for (i = [0:1:steps]) {
+ Rz((steps-i)*85/steps)
+ for (angle = [0:60:360]) Rz(angle) Tx(d_min/2+i*(d_max-d_min)/(2*(steps))) Tz(-eps)
+ cylinder(r = rod_d/2, h = base_wall + 2*eps, $fn = 6);
+ }
+}
+
+// strut
+strut_w = 15;
+strut_l = 80;
+
+Ty((d_max/2+base_wall+rod_d/2)*cos(30)) {
+ Tx(-strut_w/2) {
+ cube([strut_w, strut_l, base_wall]);
+ Ty(strut_l-base_wall) difference() {
+ cube([strut_w, base_wall, strut_w]);
+ Tx(strut_w/2) Tz(strut_w/2) Rx(-90) Tz(-eps) cylinder(r = 2.5, h = base_wall+2*eps, $fn = 6);
+ }
+ }
+ Mx() hull() {
+ Tx(strut_w/2-base_wall) {
+ Ty(-base_wall) cube([base_wall, eps, base_wall]);
+ Ty(strut_l-base_wall) cube([base_wall, base_wall, strut_w]);
+ }
+ }
+}