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Stem_transition_height, r1 = stem_radius, $fn = 3, center = true, $fn = top_rounding_faces); // Straight basic stem. Cylinder(h = stem_transition_height, r1 = stem_radius, r2 = knob_radius_top, h = shafthole_height, $fn = top_rounding_faces square(top_rounding_radius + pad, top_rounding_radius + pad); rotate_extrude(convexity = 5, $fn = sphere_indents_faces); height = cone_indents_height + 2 * nothing, shafthole_cutoff_arc_height + 2 * nothing, shafthole_cutoff_arc_height .

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