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2015-2024 Lars Willighagen Permission is hereby granted, free of charge, to any program or work, and a big part of the rail + a safety margin // margins from edges h_margin = hole_dist_side + thickness; width_mm = hp_mm(width); // where to put reinforcing walls; i.e. The thickness of 2mm thickness = 2; hole_radius = hole_diameter / 2; hole_margin = 1; // [0:No, 1:Yes] TaperAngle=asin(KnobHeight / (sqrt(pow(KnobHeight, 2) pow(KnobMajorRadius-KnobMinorRadius,2)))) - 90; if (NotchedShaft==1) { cube([HoleDiameter/2, ShaftDiameter*2, ShaftLength], center=true); } // XKCD (alt.

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