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Additions. Cylinder(r1 = knob_radius_bottom, r2 = stem_transition_radius, $fn = top_rounding_faces cylinder(h = stem_transition_height, r1 = stem_radius, $fn = stem_faces); // Widening part at the top. Rotate([0, 0, 45] cube([2, 2, KnobHeight+.001], center=true); if (style == "nut"){ // a hexagonal cutout (undersize to melt an m3 heat-set insert //hole(s) for.

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