module ks0454() {
    difference() {
    union() {
        cylinder(6, d=46, $fn=80);
        translate([-18.11, -25.735, 0]) cube([36.22,15,6]);
    }
        translate([-15, -22.2,-0.1]) cylinder(6.2, d=6, $fn=80);
        translate([15, -22.2,-0.1]) cylinder(6.2, d=6, $fn=80);
    }
}

module ks0454_noholes() {
    cylinder(6, d=46, $fn=80);
    translate([-18.11, -25.735, 0]) cube([36.22,15,6]);
}