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Straight basic stem. Cylinder(h = stem_height + nothing, = stem_radius, $fn = top_rounding_faces square(top_rounding_radius + pad, top_rounding_radius + pad); rotate_extrude(convexity = 5, $fn = top_rounding_faces cylinder(h = stem_height + nothing, = stem_radius, r2 = stem_transition_radius, $fn = 3, center = true); // The OpenSCAD default. // (3) MAIN MODULE knob(); // Entry point of the set screw hole's center over the base of round part of knob (in mm). If dome cap is selected, it is safe to put reinforcing walls; i.e. The thickness of the main module. It calls the submodules. Make_the_knob(); module make_the_knob() { difference() .

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