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3, center = true, $fn = top_rounding_faces square(top_rounding_radius + pad, top_rounding_radius + pad); rotate_extrude(convexity = 5, $fn = top_rounding_faces cylinder(h = stem_height + nothing, = stem_radius, $fn = shafthole_faces); // Adapt to a number larger than the total height of the shaft hole, allowing.

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