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Stephen Tashiro
03-24-2010, 12:53 AM
Are there speed chucks (aka "Jacobs" chucks) for impact wrenches that normally are used with sockets? ( I know that there are speed chucks for small impact driver tools whose normal bit is a screwdriver bit.)

The reason I ask, is that on my list of crazy experiments is to try a garden auger like: http://www.amazon.com/Yard-Butler-RP-3-2-75-Inch-Diameter/dp/B000S61YO2/ref=pd_sim_hi_1 with an electric impact tool instead of an electric drill.

For drilling in concrete block, I already tried a 1/4" masonry bit with a cordless impact driver and it works reasonably well. It's much easier to control than using the same bit with a hammer drill, which tends to dig a cave instead of make a nice round hole.

Now.... to drill in the hard clay of my yard.

Stephen Tashiro
04-03-2010, 11:38 AM
I see that dock workers may find impact tools useful for driving (wood) auger bits.
http://www.dockbuildersupplies.com/page/page/3998049.htm

Edit: Here's an inexpensive version: http://www.cowanchuck.com/id1.html The site has a video that is remarkably candid about the limitations of drilling with an impact tool in granite or old concrete.