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H], center=true); if (RingWidth>0 cylinder(r1=KnobMajorRadius + RingWidth, r2=KnobMinorRadius, h=RingThickness, $fn=50, center=true); if (RingMarkings>0 for (i=[0 : RingMarkings-1] rotate([0, 0, 90 + cone_indents_offset_angle + ((360 / cone_indents_count) * z)] sphere(r = sphere_indents_radius, $fn = top_rounding_faces cylinder(h = stem_transition_height, r1 = stem_radius, r2 = stem_transition_radius, $fn = top_rounding_faces); // Straight basic stem. Cylinder(h = stem_transition_height, r1 = stem_radius, $fn = 3, center = false); z_position = height * rotate_vector_cos; points = [ [left_edge, rotate_vector_cos * rail_depth], .

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