The existing bath wast connects to the soil pipe with 40ish.mm solvent
weld pipes. This comes from the soil pipe and almost immediately has a
connector taking it up at about 40degrees(?)

When that is all cut away, how does one connect anything new to what's
left?

At most all there will be is about 20-30mm of grey pipe.

On Thu, 12 Apr 2007 19:58:27 +0100, in uk.d-i-y HiHello
wrote:

The existing bath wast connects to the soil pipe with 40ish.mm solvent
weld pipes. This comes from the soil pipe and almost immediately has a
connector taking it up at about 40degrees(?)

When that is all cut away, how does one connect anything new to what's
left?

At most all there will be is about 20-30mm of grey pipe.

Surprisingly, you might be able to remove the solvent weld fitting and
leave the pipe intact.

I would try this: Hacksaw off the bulk of the fitting, then use a Dremel
with a cutting disk to very carefully slice through the remaining bit
that's wrapped around the pipe, cutting parallel to the pipe run, being
very careful not to cut too deep. Then peel the solvent joint away from
the pipe. The peel strength of the adhesive is not that great. You will
have to take it slowly and watch the Dremel cutter does not melt the
pipe instead of cutting it.

I haven't actually tried this but it should work.

Phil

On 12 Apr, 19:58, HiHello wrote:
The existing bath wast connects to the soil pipe with 40ish.mm solvent
weld pipes. This comes from the soil pipe and almost immediately has a
connector taking it up at about 40degrees(?)

When that is all cut away, how does one connect anything new to what's
left?

At most all there will be is about 20-30mm of grey pipe.

20-30mm of pipe is more than enough to connect to a solvent weld
fitting.

You are unlikely to be able to remove any existing fitttings without
damaging the pipework because they are welded together due to the
solvent rather than simply just being glued together with an adhesive.