large=20;

manche=50;

haut=5;

$fn=60;

difference(){

union(){

cube([long-1,large,haut],center=true);

translate([-0.5*manche,0,-0.25*haut]){cube([manche,haut,0.5*haut],center=true);}

rotate([0,-90,0])cylinder(r=0.5*haut,h=manche);

}

rotate([0,5,0]){

translate([10,0,2]){

cube([long+50,large+20,1.2*haut],center=true);

} } }

translate([-manche,0,0]){sphere(d=haut);}