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]);
		}
	}
}