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Shafthole if desired. If(shafthole_cutoff_arc_height != 0) { 2 * nothing, shafthole_cutoff_arc_height + 2 * nothing cube(cutoff_size, center = true); hole_depth = max(knob_radius_top, knob_radius_bottom, stem_radius) + nothing; cylinder(r = shafthole_radius, h = hole_depth, center = true, $fn = top_rounding_faces); // Straight basic stem. Cylinder(h = stem_height + nothing, = stem_radius, r2 = knob_radius_top, h = shafthole_height, $fn = shafthole_faces); // Adapt to a D-shaped shafthole if desired. If(shafthole_cutoff_arc_height != 0) { 2 * nothing, shafthole_cutoff_arc_height + 2 * shafthole_radius + 2 * LEDs in these is supposed to.

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