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Top_rounding_faces square(top_rounding_radius + pad, top_rounding_radius + pad); circle(r = top_rounding_radius, $fn = top_rounding_faces square(top_rounding_radius + pad, top_rounding_radius + pad); rotate_extrude(convexity = 5, $fn = sphere_indents_faces); height = cone_indents_height + 2 + hole_diameter + hole_margin*2; side_margin = (board_width - hole_hdist) / 2; hole_margin = 1; $n > 0; $abs.

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