$fn=64;


difference() {
    hull() {
        translate([0, 7.5, 0]) {
            cylinder(d=15, h=10);
        }
        translate([0, -7.5, 0]) {
            cylinder(d=15, h=10);
        }
    }
    hull() {
        translate([0, 3.1, -1]) {
            cylinder(d=6.21, h=20);
        }
        translate([0, -3.1, -1]) {
            cylinder(d=6.21, h=20);
        }
    }

    translate([0, 0, 10]) {
        rotate([0, -7, 0]) {
            cube([60, 60, 2], center=true);
        }
    }


}