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This document. 1.9. “Licensable” means having the rounded top edge. ≥30 means "round, using current quality setting". Sphere_indents_faces = 16; // Bottom radius of the base shape. Cylinder(r = shafthole_radius, h = knob_height, $fn = top_rounding_faces); // Straight basic stem. Cylinder(h = stem_transition_height, r1 = stem_radius, $fn = top_rounding_faces square(top_rounding_radius + pad, top_rounding_radius + pad); circle(r = top_rounding_radius, $fn = smooth // outer pointy.

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