Quote:
Originally Posted by dplars
Be careful of what kind of drill you use, a conventional drill will exacerbate the crack, it causes heat and pressure on the sides of the hole. Use a step drill or one designed for plexy.
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Good advise......I didn't want to get too complicated but I always alter the grind of the drill with a zero rake when drilling plastic so it would not pull itself in like a screw and crack the plastic. A step drill is ground the same way and would be a good choice.