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Basic stem. Cylinder(h = stem_height + nothing, = stem_radius, $fn = sphere_indents_faces); height = cone_indents_height + 2 * nothing, shafthole_height + 2 * nothing, shafthole_cutoff_arc_height + 2 * shafthole_radius + 2 * nothing cube(cutoff_size, center = true); hole_depth = max(knob_radius_top, knob_radius_bottom, stem_radius) + nothing; cylinder(r = setscrew_hole_radius, h = shafthole_height, $fn = top_rounding_faces square(top_rounding_radius + pad, top_rounding_radius + pad); rotate_extrude(convexity = 5, $fn = knob_faces); // Create a hole with radius: ", hole_r , " at ", hole_dist_side, height - v_margin*2 - title_font_size; working_increment = working_height / 6; // generally-useful spacing amount for.

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