infty = 1000;
eps = 0.01;

wall = 2;
screw_hole = 3.5;
screw_l = 3;
screw_off = 10;

cable_w = 7;
cable_h = 3;
cable_off = 24;

led_w = 10;
led_h = 2.5;
led_d = (pow(led_w/2, 2) - pow(led_h, 2))
		/ (2 * led_h);

holder_w = 8.5;

vert_l = 20;

module body() {
	cube([wall, vert_l + wall, holder_w]);
//	translate([-10, -wall, 0])
//		cube([10+wall, wall+eps, holder_w]);
	hull() {
		for (x = [0, cable_w - 2*cable_h])
		translate([0, cable_off+x, 0])
			cylinder(r = cable_h + wall, h = holder_w, $fn = 64);
	}
	translate([-led_w/2, led_d, 0])
	cylinder(r = led_d + led_h + wall, h = holder_w);
}

difference() {
	body();
	translate([-50, 0, -50/2]) cube(50);
	// screw hole
	hull() {
		for (x = [0, screw_l])
			translate([-eps, screw_off + x, holder_w/2])
			rotate([0, 90, 0])
			rotate([0, 0, 90])
			cylinder(r = screw_hole/2, h = wall + 2*eps, $fn = 6);
	}
	// cable hole
	hull() {
		for (x = [0, cable_w - 2*cable_h])
		translate([0, cable_off+x, -eps])
			cylinder(r = cable_h, h = holder_w + 2*eps, $fn = 64);
	}
	// led strip
	intersection() {
		translate([-led_w/2, led_d, -eps])
			cylinder(r = led_d + led_h, h = holder_w + 2*eps);
		translate([-50, -50/2, -50/2]) cube(50);
	}
	// strip off the vertical part of led strip cylinder
	translate([wall, -50+screw_off, -50/2]) cube(50);
}