I'm not sure what you mean.
If you are referring to the emitters, the left & right are just cut at 45 degrees off a miter box, and the center is the same, but carefully matched, so it comes to an arrow point ("V" shape).
If you are referring to the central "cross" or "+" section, where the ends taper off, that is the way that part was molded, I made no modifications there.
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