"Tim W" wrote in message
...
"Anode" notvalid
wibbled on Saturday 26 September 2009 01:03


"Jules" wrote in message
news
On Fri, 25 Sep 2009 22:43:20 +0000, YAPH wrote:
SDS will do it, but will make a mess on the break-out side. Drilling a
smaller pilot hole and then expanding it to 25mm will be easier and
make
less mess.

Or if there's access, drill the pilot and then drill the "last inch" or
so of the hole from the other side.



Thanks for the suggestion. However in this case I have access to one side
only.

Anode.

Use a TCT core cutter. Use hammer until you are within the last 2cm (go by
measurement) then turn hammer off and go slow. The last 2cm will take some
time but you should come out with minimal damage.

--
Tim Watts

Thanks for your help Tim. I shall probably do the job in the way you
describe, so I get a hole big enough to be able to use some adequate
sleeving.

Anode.