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(sqrt(pow(KnobHeight, 2) cube([2, 2, KnobHeight+.001], center=true); if (style == "nut"){ // a round shafthole base shape. See knob_base(). Rotate([0, 0, i * (360/RingMarkings)] cube([RingWidth*.5, MarkingWidth, 2], center=true); if (RingMarkings>0 for (i=[0 .

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