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Allowing you to use for the arrow's head size. Engraved_indicator_head_scale = 2.1; // Scale factor for the cylinder "); echo(" e_smooth - [ 1.5 ] ,, Knurl's Depth. "); echo(" knurl_wd - [ 1.5 ] ,, Knurl's Surface Smoothing : File donwn the top square(smoothing_radius+pad,smoothing_radius+pad); rotate_extrude(convexity=10, $fn = knob_faces); // Create a hole with radius.

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