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= 1/5" = 5.08mm function units_mm(u) = u * U; // h[p] if (style == "nut"){ // a round shafthole base shape. See knob_base(). Rotate([0, 0, 90 + cone_indents_offset_angle + ((360 / sphere_indents_count) * z)] sphere(r = sphere_indents_radius, $fn = top_rounding_faces); // Straight basic stem.

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