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Knurled_cyl() module, you need a bigger flat flat_size = 5 square(top_rounding_radius + pad, top_rounding_radius + pad); rotate_extrude(convexity = 5, $fn = top_rounding_faces square(top_rounding_radius + pad, top_rounding_radius + pad); circle(r = top_rounding_radius, $fn = smooth // outer pointy indicator // cube size of circle fragments in mm. Quality == "final rendering") ? 0.1 : quality == "preview") ? 6 : quality == "fast preview") ? 12 : 12; .

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