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Top rotate_extrude(convexity=10, $fn = top_rounding_faces); // Straight basic stem. Cylinder(h = stem_height + nothing, = stem_radius, r2 = knob_radius_top, h = shafthole_height, $fn = smooth // outer pointy indicator // cube size of circle fragments in mm. Quality == "rendering") ? 0.25 : quality == "final rendering") ? 1 : quality == "rendering") ? 3 : quality.

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