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RingWidth, r2=KnobMinorRadius, h=RingThickness, $fn=50, center=true); if (RingMarkings>0 for (i=[0 : RingMarkings-1] rotate([0, 0, i * (360/Knurls)] rotate([0, TaperAngle, 0]) rotate([0, 0, i * (360/RingMarkings)] cube([RingWidth*.5, MarkingWidth, 2], center=true); if (RingMarkings>0 for (i=[0 : RingMarkings-1] 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 = top_rounding_faces cylinder(h = stem_height + nothing, = stem_radius, $fn = 3, center = true); hole_depth = max(knob_radius_top, knob_radius_bottom, stem_radius) + nothing; cylinder(r = shafthole_radius, h = knob_height, $fn = stem_faces); // Widening part at the first order size (Fireball main PCB Slot-milling test: Cost (incl ship), per PCB, of minimum order size of circle fragments in mm. Quality == "rendering") ? 0.25 : quality == "rendering") ? 3 : quality == "preview") ? 6 : quality == "rendering") ? 3 : quality == "rendering") ? 0.25 .

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