On Wed, 30 Nov 2005 09:37:00 UTC, "Doctor Drivel"
wrote:

"Dave Plowman (News)" througha haze of senile
flatulence wrote in message ...
In article . com,
wrote:

I see these in the Screwfix catalogue, Impact Drivers. Anyone know what
that is? Does the drill hammer? Is it just a drill/driver without a
chuck? What is the advantage? Also, Drywall Drivers, also in Screwfix,
what do they do over a drill/driver? If a tool can save me time, effort
and produces a better quality job, then I am always interested.

An impact driver is usually a screwdriver which can take a variety of bits
or sockets and has a cam mechanism within. It's purely mechanical. You
engage it on the screw or nut and whack it with a hammer. Most commonly
used on cars rather than houses.

Would you believe it, Richard Cranium hasn't a clue as usual. An impact
driver in this sense, is a drill/driver that has a "rotational" hammer
action.

Someone may have called such a thing an 'impact driver'. But the purely
mechanical ones have been around a long time. I bought one 40 years ago
and still use it; it lives in a box (that it came in) with 'Impact
Driver' printed on it.

So there.

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