In article ,
T i m wrote:
Now I know I could punch through it with my
SDS drill (and eventually did) but I wanted to keep the noise down for
the flat above (this *was* midday though and 86 deg) and remembered
I once had a 'masonary punch' that was perfect for cracking a hard
thing with a few taps of a hammer then being able to drill on through.
From memory it had a plated hex body like a cold chisel and a long
fluted parallel shaft / 'punch' bit?

Rawltool. But it wouldn't be anything like as fast as an SDS. And you
needed more than a few taps of a hammer. But they would eventually go
through stuff a hammer drill wouldn't touch. I've still got a few
somewhere. And they were very hard work.

--
*If love is blind, why is lingerie so popular?

Dave Plowman London SW
To e-mail, change noise into sound.