$fs = 0.4;
$fa = 1;
union(){
cube([60,20,10],center = true);
translate([5,0,9.999]){
cube([30,20,10],center = true);
}
translate([-20,-15,0]){
rotate([90,0,0]){
cylinder(3, r = 8,center = true);
}
}
translate([-20,15,0]){
rotate([90,0,0]){
cylinder(3, r = 8,center = true);
}
}
translate([20,-15,0]){
rotate([90,0,0]){
cylinder(3, r = 8,center = true);
}
}
translate([20,15,0]){
rotate([90,0,0]){
cylinder(3, r = 8,center = true);
}
}
translate([-20,0,0]){
rotate([90,0,0]){
cylinder(30, r = 2,center = true);
}
}
translate([20,0,0]){
rotate([90,0,0]){
cylinder(30, r = 2,center = true);
}
}
}