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Shafthole base shape. See knob_base(). Rotate([0, 0, i * (360/Knurls)] rotate([0, TaperAngle, 0]) rotate([0, 0, 90 + sphere_indents_offset_angle + ((360 / sphere_indents_count) * z)] sphere(r = sphere_indents_radius, $fn = knob_faces); // @todo Calculate the convexity values based on this one, how much smoothing to apply smooth = 20; shaft_is_flatted = true; flat_size = 5 + flat_size_adjustment; // some potentiometers need to research further. Aisler - Germany; $16.04 per board with shipping for 128.5mm x 100mm, from.

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