The bits that passed these tests were given awards based on their strengths. Afterward, we did our best to hand sharpen each of the larger bits with a file. We did our best to maintain similar speeds and pressure throughout each portion of every test. Then we moved to some heavier-duty 7-gauge flat stock, again testing how each bit made it through the test. We wanted to see how well they’d retain their edge, how hot they’d get, and how long it would take them to bore a hole in the metal. There’s only one good way to test drill bits for metal: We needed to put some holes in some metal! We grabbed some scraps of metal off our welding cart, chucked some bits into our drill, and started drilling.įirst, we drilled into some relatively light-duty 11-gauge steel angle iron, testing a few bits from each pack. Photo: How We Tested the Best Drill Bits for Metal
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