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Face to be a negative decimal if you want finger ridges around the top edge radius circle_height = 1; // [0:No, 1:Yes] TaperAngle=asin(KnobHeight / (sqrt(pow(KnobHeight, 2) cube([2, 2, KnobHeight+.001], center=true); if (RingMarkings>0 for (i=[0 : Knurls-1] rotate([0, 0, 90]) // To align a face is not available, but a bitmap generator is available for arbitrary text (using size .

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