Hammer drill provides some forward and back action, which helps break up
cement. I would never use hammer drill for driving bolts or screws (which
need rotation).

Christopher A. Young
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"Daniel Prince" wrote in message
...
"Stormin Mormon" wrote:

Hammer function is used only with masonary bits, and only for holes through
cement or rock. Other than that, simple drilling is used.

What about driving hex head bolts or drywall screws?
--
When a cat sits in a human's lap both the human and the cat are usually
happy. The human is happy because he thinks the cat is sitting on him/her
because it loves her/him. The cat is happy because it thinks that by
sitting
on the human it is dominant over the human.