openSCAD models for 3d-printing
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difference() {
difference() {
cylinder(r1=4.2, r2=4.2, h=5, $fn=50);
cylinder(r1=3, r2=3, h=5, $fn=50);
}
translate([-5,0,10]) {
rotate([0,90,0]) {
cylinder(r1=7, r2=7, h=10, $fn=50);
}
}
}