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5 square(top_rounding_radius + pad, top_rounding_radius + pad); rotate_extrude(convexity = 5, $fn = top_rounding_faces); // Straight basic stem. Cylinder(h = stem_transition_height, r1 = stem_radius, $fn = knob_faces); // Create a hole with radius: ", hole_r , " at ", width_mm - thickness*2; // draw a horizontal wall (across the panel // h = knob_height, $fn = sphere_indents_faces); height.

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