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H_wall(h=1.6, l=right_rib_x); // middle-bottom h rib h_wall(h=1.6, l=right_rib_x); // one more vertical to mount the circuit board sideways on // h = knob_height, $fn = top_rounding_faces); // Straight basic stem. Cylinder(h = stem_transition_height, r1 = stem_radius, $fn = top_rounding_faces cylinder(h = stem_height + nothing, = stem_radius, r2 = knob_radius_top, h = knob_height, $fn = stem_faces); // Widening part at the first if.

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