A while back someone said they used their impact driver to drill holes for electrical runs in joists. I critiqued that as an improper use of an impact driver. I am now here to "eat crow" and I hereby withdraw that opinion. Using a Bosch Daredevil self feed 3/4" spade bit I drilled a series of holes in joists spaced 16" on center using a PC 20 volt impact driver. Total length of the combination was such that the drill and bit fit between joists so a 90 degree hole could be drilled. (that was my primary reason for trying the idea) I was amazed how fast that combination popped those holes through 25 year old joists. Faster than using the drill version of the PC combo pack. And no impact driver was harmed in the demonstration. And if you hit a nail ( I didn't), it won't twist your wrist into submission like a drill might. I wouldn't try using it for plumbing size holes, but for smaller holes it worked great without having to go out and invest in an right angle drill like a Hole Hawg. Heck, the combo pack is about half the cost of Milwaukee's monster drill. Ok, I am comparing apples and eggs, I get it. By the way, I would love to have a Hole Hawg in my stable of drills, but I just can't justify it as my DIY skills don't yet include drilling 4 inch holes for drain pipes.
http://www.lowes.com/pd_234292-34252...11480000348045
http://www.homedepot.com/p/Milwaukee...75-6/100000548
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