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13; // this one is easy hole_bottom = hole_top - 90; DivotRadius = KnobMinorRadius*.4; // Primary knob cylinder for (i=[0 : RingMarkings-1] rotate([0, 0, i * (360/RingMarkings)] cube([RingWidth*.5, MarkingWidth, 2], center=true); if (Pointer2==1 cube([8, 3, KnobHeight], center=true); // Pointer1: Offset hemispherical divot // Flat for D-shaped hole // D shaft shape for shaft cutout // set screw hole. ≥30 means "round, using current quality setting". Shafthole_faces = 20; // [0:0%, 10:10%, 20:20%, 30:30.

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