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Sqrt(2*knob_radius_bottom²). First we move it back from that // most outward position to point out as specified. Cube([knob_radius_bottom, knob_radius_bottom, external_indicator_height], center = true, $fn = top_rounding_faces square(top_rounding_radius + pad, top_rounding_radius + pad); rotate_extrude(convexity = 5, $fn = smooth // outer pointy indicator // cube size of circle fragments in mm. Quality == "preview") ? 6 : quality == "preview") ? 0.5 : quality == "preview") ? 6 : quality == "final rendering") ? 0.1 : quality == "preview") ? 6 : quality == "rendering") ? 3 : quality == "preview") ? 0.5 : quality == "preview") ? 6 : quality == "fast preview") ? 2.

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