difference() {
 cylinder(1,35,35,$fn=1);
    
    translate([11,12,0])
    rotate([0,0,60])
    cube ([1,11,1]);
    
    translate([11,-13,0])
    rotate([0,0,120])
    cube ([1,11,1]);
    
    translate([8,-1.5,0])
        cube ([20,3,1]);
    translate([-10,-1.5,0])
        cube ([15,3,1]);
    
    translate([8,4,0])
        cube ([10,3,1]);
    translate([-10,4,0])
        cube ([15,3,1]);

    translate([8,-7,0])
        cube ([10,3,1]);
    translate([-10,-7,0])
        cube ([15,3,1]);
    }
    
    translate([32,-1,0])
        cube ([3,2,1]);
    
    translate([35,-3,0])
        cube ([2,6,1]);
    
    translate([-20,-30,0])
        cube ([3,2,1]);
    
    translate([-21,-32,0])
        cube ([2,6,1]);
    
    translate([-20,28,0])
        cube ([3,2,1]);
    
    translate([-21,26,0])
        cube ([2,6,1]);