$fn = 32;

//cube([67, 31, 1.5], center=true);





difference(){

union(){
translate([0,0,10])
minkowski(){ 

cube([61, 22, 1], center=true);

cylinder(d = 10, h = 1, center = true);
}

translate([36,0,10])
cylinder(d = 12, h = 2, center = true);

translate([-36,0,10])
cylinder(d = 12, h = 2, center = true);
}


translate([36,0,9])
cylinder(d = 4, h = 5, center = true);

translate([-36,0,9])
cylinder(d = 4, h = 5, center = true);
}