The Only Drill Bit You Need to Own

There are at least two drill bits on the market that claim to be effective with all materials. Bosch calls its version "multi-construction," and Artu?which says its bits will even bore through glass?uses the label "multipurpose." Both manufacturers say the products can be used in rotary or percussion mode, though you obviously wouldn't want to put a hammer drill to glass! For either brand, a five-bit set costs $18 to $25, depending on your point of purchase.

I lug around a lot of tools, so I understand why you'd want to simplify your kit with a universal bit. In fact, I get a lot of use out of my multipurpose tools and accessories. But I do employ dedicated bits and blades depending upon whether a job demands precision, speed or cleanliness. When drilling large holes in lumber, for instance, I reach for a razor-sharp auger bit.

Regardless, I still believe in general-purpose bits. A 13-piece set of M2 high-speed steel bits ($10 to $12) can be an asset to anyone who's handy with a drill. With a tip geometry of 118 degrees, they'll readily bore through wood and even steel. Incidentally, when drilling steel, use cutting fluid; if you're using the tool at an angle or drilling upward, use a gel or cream lubricant to make sure that it stays put as you make your hole.

Source: http://www.popularmechanics.com/home/reviews/power-tools/the-only-drill-bit-you-need-to-own?src=rss

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