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Old November 25, 2010, 05:22 PM
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Mnpctech Mnpctech is offline
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Location: Minnesota
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Drill bits for cutting Plastics
McMaster-Carr

Metal drill bits will not work for acrylic or plastic, they're made to bite into the metal as they are pushed into it. If they are used on acrylics they will chip and cause other damage to the plastic. When drilling holes for screws, you must make the hole larger than the screw itself to allow for expansion and contraction of the material. If not you will cause stress cracks at the hole and they will spread!





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