module example005()
{
	translate([0, 0, -120]) {
		difference() {
			cylinder(h = 50, r = 100);
			translate([0, 0, 10]) cylinder(h = 50, r = 80);
			translate([100, 0, 35]) cube(50, center = true);
		}
		for (i = [0:5]) {
			echo(360*i/6, sin(360*i/6)*80, cos(360*i/6)*80);
			translate([sin(360*i/6)*80, cos(360*i/6)*80, 0 ])
				cylinder(h = 200, r=10);
		}
		translate([0, 0, 200])
			cylinder(h = 80, r1 = 120, r2 = 0);
	}
}

example005();