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// Primary knob cylinder for (i=[0 : Knurls-1] rotate([0, 0, i * (360/RingMarkings)] cube([RingWidth*.5, MarkingWidth, 2], center=true); cube([8, 3, KnobHeight], center=true); // Pointer1: Offset hemispherical divot sphere(r=DivotRadius, $fn=40); // Divot1: Centered cylynrical divot // Flat for D-shaped hole // begin arrow top cutout cylinder(r=8, h=10, $fn=3, center=true); for (z = [0 : sphere_indents_count]) { // 90° base rotation angle to align the indentations with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY CLAIM, DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER > CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN AN ACTION OF.

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