Pecanfan wrote:

Sounds like fun! Well, I need to get through approximately 2ft of the
hardest brick in the world so I'm going to look into hiring some form of
diamond core drill - just to add to the fun I'll be 20ft up a ladder in gale
force winds at the time - woohoo!! :-|

If using a core drill, why not drill from the inside out?

I have done a 4" core with 11" solid walls... that was easy to do by
sticking a pilot hole right through and then drilling half way in from
each side... the second one I did it was not as easy to get to the
outside, so I did that all from the inside and just broke out the core
when I ran out of depth on the core drill. You will need a powerful
drill for a core much bigger than 4", my 780W Makita SDS only just coped
with that.

In think in your case I would be tempted to core bore a hole big enough
for the pipe (say 120mm), and then open out the final couple of inches a
bit wider to accept the elbow using a SDS chisel, rather than make the
whole length of the hole bigger than you need just so the coller of the
elbow will fit one end.



--
Cheers,

John.

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