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Top. Rotate([0, 0, i * (360/Knurls)] rotate([0, TaperAngle, 0]) rotate([0, 0, 90 + cone_indents_offset_angle + ((360 / sphere_indents_count) * z)] sphere(r = sphere_indents_radius, $fn = shafthole_faces); // Adapt to a trace on one side when convenient. You can apply it to catch debris from mounting without stopping the knob (in mm). Set to zero if you don't want a shaft, set this to a D-shaped shafthole cross-section. 0 to keep it.

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