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Round shafthole base shape. Cylinder(r = setscrew_hole_radius, h = shafthole_height, $fn = 3, center = true); hole_depth = max(knob_radius_top, knob_radius_bottom, stem_radius) + nothing; cylinder(r = shafthole_radius, h = shafthole_height, $fn = 3, center = true); // The OpenSCAD default. // Minimum size of circle fragments in mm. // ====================================================================== knob(); // Entry point of.

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