module lucet(handle=true, hole_r=4, slot_bottom=false, slot_top=false, h=6) {
    difference() {
        minkowski() {
            linear_extrude(height=h-4) union() {
                import("gfx/lucet.dxf");
                if (handle) {
                    import("gfx/lucet-handle.dxf");
                }
            }
            sphere(r=2);
        }
        if (slot_bottom) {
            translate([20-h/2-0.5, 28, -3]) cube([h+1, 19, h+2]);
        }
        if (slot_top) {
            translate([20-h/2-0.5, 47, -3]) cube([h+1, 19, h+2]);
        }
        if (hole_r) {
            translate([20, 47, -3]) cylinder(r=hole_r, h=h+2, $fn=32);
        }
    }
}