![]() Use a center punch and a hammer to mark the location of the hole and to give the drill bit a place to start without wandering.There are a couple of things to know about drilling holes in metal. Using these, or any drill bits, improperly can render them largely useless pretty quickly. To get the best performance and life out of them, it’s important to take care of them properly. While Diablo’s stepped drill bits will save time and hassle, they’re not exactly cheap. Trevor Raab About Drilling Holes in Metal Drilling holes for conduit fittings and connectors in electrical boxes.Drilling holes for grommets when passing wires through sheet metal.Fabricating mounts and brackets for Popular Mechanics test equipment.Making gasket flanges for swimming pool plumbing.Making mounting brackets for automotive electrical relays and exhaust systems.Some examples where we’ve used step drill bits: Taking a drill or impact driver with one bit-as opposed to several-simplifies the operation. At these times, we might be away from our toolbox, working on something that may be difficult to measure precisely. I’ve found step drill bits to be especially useful when fabricating and making repairs or alterations to equipment. However, these are useful for anyone needing to drill holes in metal and plastic materials up to 5⁄16 of an inch thick. This removes just a little material from the top edge of the hole, chamfering it inward and finishing it nicely.ĭiablo originally designed its step drill bits with electricians and plumbers in mind, for jobs like drilling holes in junction boxes or sink flanges. Once I drill a hole to the desired size, for just a moment, I continue drilling with the bevel to the next size. When I used these with an impact driver, it eliminates fussing with the drill chuck, which has to be tightened to hold the bits-instead, I can just slip them straight in and then pull on the chuck collar to release them.Īnother thing I like is the ability to finish the rough edges of holes with the same Diablo bit used to drill the hole, saving yet another step. That convenience is also accentuated due to the impact-ready, 1⁄4-inch hex shank on each of the drill bits. The convenience of this is something I’ve come to appreciate, especially on projects that require multiple holes. So each successive step does the job that would normally occur when switching to a larger bit, saving time in the process. The sharpened edge of these bevels remove material up to the size of the next step. Between each step on Diablo’s drill bits is a beveled transition. Diablo’s Impact Strong Step Drill Bits simplify the process, enabling you to drill small or large holes in metal in one single operation. And then, if the edges are sharp or rough, you may need to clean up the hole with a larger drill bit or countersink. Sometimes, you may have to do this four or more times-removing the drill bit, returning it to the index, selecting the next one, and chucking it up each time. The process of drilling in metal typically involves starting with a small hole and then enlarging it with successively bigger drill bits until you have the size you need. Includes one drill bit with 17 steps, up to a 1-1⁄8-inch diameter.Includes one drill bit with 12 steps, up to a 7⁄8-inch diameter.Includes one drill bit with six steps, up to a 1⁄2-inch diameter.Although they were originally designed for electrical and plumbing work, I find Diablo’s step drill bits are incredibly useful in fabrication, as well as working with or making repairs to metal and plastic equipment. While they can drill many different sized holes, they won’t necessarily replace a full drill bit index-they’re best for metal and plastics, up to 5⁄16 of an inch thick. Minnesota state franchise registration number F-2705.The Takeaway: Diablo’s Impact Strong Step Drill Bits are a fast, convenient way to drill holes from 3⁄16 of an inch to 1-1⁄8 inches without having to swap bits. If you are a resident of, or wish to acquire a franchise for a to be located in, one of these states or a country whose laws regulate the offer and sale of franchises, we will not offer you a franchise unless and until we have complied with applicable pre-sale registration and disclosure requirements in your jurisdiction. Currently, the following states regulate the offer and sale of franchises: California, Hawaii, Illinois, Indiana, Maryland, Michigan, Minnesota, New York, North Dakota, Oregon, Rhode Island, South Dakota, Virginia, Washington, and Wisconsin. ![]() An offer is made only by Franchise Disclosure Document (FDD). ![]() This information is not intended as an offer to sell, or the solicitation of an offer to buy, a franchise. Ranked by Entrepreneur Magazine, Tools Distribution Category years 2007, 2008, 2010, 2011, 2012. ![]()
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