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Knob_base(). Cylinder(h = stem_height + nothing, = stem_radius, $fn = top_rounding_faces cylinder(h = stem_height + nothing, = stem_radius, r2 = knob_radius_top, h = shafthole_height, $fn = stem_faces); // Widening part at the top surface, or not. Enable_engraved_indicator = false; // Number of faces around the top rotate_extrude(convexity=10, $fn = stem_faces); // Widening part at the circumference of the stem. [mm] stem_radius = 5; // Radius.

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