$fn= 150;
difference() {
  minkowski() {
    hull() {
      translate([-13,-14,0])
      rotate([0,0,0])
      cylinder(h=8, r=6, center=true);
      translate([0,7,0])
      rotate([0,0,0])
      cube([40,0.1,20], center=true);
    }
    cylinder(1, center=true);
    rotate([0,90,90]) cylinder(1, center=true);
  rotate([0,90,0])  cylinder(1, center=true);
  }
    translate([0,16,0])
    rotate([-40,90,0])
    cylinder(h=90, r=3.25, center=true);
    translate([6,12,0])
    rotate([-40,90,0])
    cylinder(h=90, r=3.25, center=true);

    translate([14,-5,0])
    rotate([90,0,0])
    cylinder(h=16, r=4, center=true);
    translate([14,1,0])
    rotate([90,0,0])
    cylinder(h=26, r=2, center=true);
}