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== "preview") ? 6 : quality == "preview") ? 6 : quality == "final rendering") ? 0.1 : quality == "preview") ? 6 : quality == "preview") ? 6 : quality == "fast preview") ? 12 : 12; // Maximum depth cut by the indenting cones. [mm] // Number of faces on the top rotate_extrude(convexity=10, $fn = 3, 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 square(top_rounding_radius + pad, top_rounding_radius + pad); circle(r = top_rounding_radius, $fn = top_rounding_faces square(top_rounding_radius + pad, top_rounding_radius + pad); rotate_extrude(convexity = 5, $fn = stem_faces); // Widening part.

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