thisismatt Posted July 11, 2011 Report Share Posted July 11, 2011 Try a tungsten carbide hole saw. ARTU makes a decent one that is coated all around the edge. Not terrible on the price and OSH sells them. Blows the bimetal hole saws right out of the water. I've used them for cutting lab grade epoxy counter tops, works beautifully. You can barely scratch those with even a good quality bimetal (believe me I've tried) Also, make sure to use a good sized drill and lots of pressure! If you've got a 1/2 inch now is the time to use it. I'm just sayin a decent bimetal saw will work fine if done correctly, and improper use is going to cause any bit or saw to crap out prematurely. Quote Link to comment
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