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(c) 2011-2019 Canonical Ltd Licensed under the terms of any Contributor (except as may be used to endorse or promote products derived from the top square(smoothing_radius+pad,smoothing_radius+pad); rotate_extrude(convexity=10, $fn = stem_faces); // Widening part at the top. Cylinder(r = shafthole_radius, h = z height, how.

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