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Shafthole if desired. If(shafthole_cutoff_arc_height != 0) { 2 * nothing cube(cutoff_size, center = true); hole_depth = max(knob_radius_top, knob_radius_bottom, stem_radius) + nothing; cylinder(r = setscrew_hole_radius, h = hole_depth, center = true); hole_depth = max(knob_radius_top, knob_radius_bottom, stem_radius) + nothing; cylinder(r = shafthole_radius, h = engraved_indicator_depth * 2, $fn = setscrew_hole_faces); // @todo Calculate.

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