//projection(cut=true)
scale([10, 10, 10]) {
    difference() {

        rotate_extrude(convexity=10, $fn=100)
        translate([2, 0, 0])
        circle(r=0.5, $fn=100);

        rotate_extrude(convexity=10, $fn=100)
        translate([2, 0, 0])
        circle(r=0.4, $fn=100);
        
        rotate_extrude(convexity=10, $fn=100)
        translate([1.85, -2, 0])
        square([0.4, 4]);

    }
    
    n = 15;
    
    for(i = [1:n])
    {
        rotate([0, 0, i * 360 / n]) translate([2, 0, 0]) scale(0.35) sphere($fn=100);
    }
}