Labels Milestones
BackSquare(top_rounding_radius + pad, top_rounding_radius + pad); circle(r = top_rounding_radius, $fn = shafthole_faces); // Adapt to a trace on the mid surdos.
Square(top_rounding_radius + pad, top_rounding_radius + pad); circle(r = top_rounding_radius, $fn = shafthole_faces); // Adapt to a trace on the mid surdos.