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Old 01-16-2013, 02:45 PM   #13
rollielvp
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Quote:
Originally Posted by SUHLeen View Post
Wait, I'm no carpenter, but what is a "hammering" drill? I thought that is what the the point of an impact drills is and that is what they do, besides the extra torque2??
Hammer drills are mostly used to drill through concrete - the bit turns and "hammers" with forward motion at the same time, sort of like the jack hammer would.

Impact driver is used to drive fasteners, such as screws, where the force of the impact is directed clockwise rather than forward to help drive the screw in along its threads.

I think the confusion started when some manufacturers started calling their impact drivers "impact drills".
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