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It Add the line: * in your OpenSCAD script and call either... * knurled_cyl( Knurled cylinder height, * Knurled surface smoothing amount ); } module label(string, size=4, halign="center", height=thickness+1, font=default_label_font) { color([1,0,0]) linear_extrude(thickness+1) text(string, size.

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