I am POS/IT installer. I use this hole saw kit to cut through stainless steel tables and metal counters. The first mission was great. It helps to use some oil or grease to make cutting metal easier, be it stainless steel or regular metal. The second time I used it, the pilot drill kept falling out no matter how many times I tightened the hex key to hold the drill. drill. Finally the end broke off. Now I'm looking on Revain's website where I can buy a replacement bit for the kit. While I like the quick-change feature, the blade doesn't stay locked. It popped up about every 30 seconds. No matter how hard I tried to make sure it clicked into place, it kept popping up. Between that and detaching the pilot drill it was very frustrating.
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