//par1 for blackblock by joak
//copyleft
$fn = 100;


module part1(){
		difference(){
			union(){
				rotate(0,[0,1,0])
				translate([0,0,25])
				cylinder(r = 17, h = 50, center = true);
				rotate(90,[0,1,0])
				translate([0,0,25])
				cylinder(r = 17, h = 50, center = true);
				rotate(90,[1,0,0])
				translate([0,0,25])
				cylinder(r = 17, h = 50, center = true);
				sphere(r = 17);
			}
			union(){
				rotate(0,[0,1,0])
				translate([0,0,25])
				cylinder(r = 12.5, h = 50, center = true);
				rotate(90,[0,1,0])
				translate([0,0,25])
				cylinder(r = 12.5, h = 50, center = true);
				rotate(90,[1,0,0])
				translate([0,0,25])
				cylinder(r = 12.5, h = 50, center = true);
				sphere(r = 12.5);
			}
		}
	}



part1();