In article ews.net,
Doctor Drivel wrote:
So it moves the drill bit in and out? Rather than moving the chuck in
and out?


And just how do you think this could be achieved since the chuck grips
the drill bit tightly?

snip senility

You're the senile one, old boy, if you don't know how a three jaw chuck
works.

How does it compare to an SDS?


SDS drill bits are driven by flutes for just that reason that they can
be 'hammered' without having to move the extra weight of the chuck.

snip more senility

Sad isn't it.

It's sad that after all your posturing on cordless drills etc you haven't
a clue how they work.

--
*Monday is an awful way to spend 1/7th of your life *

Dave Plowman London SW
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