Cutting my soil pipe. Can anybody help?

[gbb]

As an afterthought, is the section of pipe above the boss liftable once its cut...if so, you can get a normal joint in.

 

[slowmotion]

He did. I missed that as I was imagining the results of the angle grinder or rather, trying not too.

I suspect that the inside of a vertical length of PVC soil pipe is actually quite pristine, even after forty five years of "stuff" being lobbed down it. I may well be proved wrong this weekend! Actually, I'm more worried about a rat coming up from down below.

 

[classic33]

The Bond film villain, Jaws, could gnaw through iron pipes but I only have PVC to deal with.

Hacksaw blade, reversed so that you're cutting on the pull & not the push. Less chance of bending the blade whilst cutting.

Make sure nothing falls down inside.

Actually, I'm more worried about a rat coming up from down below.

Mr Jingles!!

 

[fossyant]

It's a poo pipe.....

Didn't want to remove my old loo from the poo pipe, just in case, but after 18 years the pipe was very clean - phew....

 

[slowmotion]

Its not that easy. I had to do similar years ago on a downpipe that had been hit by a forklift.
The problem is, even if you can get a straight cut, you remove the old piece (I assume you want rid of the old boss), lets say the joint below the boss is re-useable, ypu insert a new piece of pipe into that, push a joint on that at the top, you now won't get it on the section above because of the overlap...does that make sense.
If the pipe is going to be hidden, I'm not sure if you can buy a rubber slip over joint (basically a thick piece of rubber hose )and fix it with hose clips.
I think that's what I had to do in the end...but it was maybe 20 years
Is that a soil pipe (sewage) or rainpipe out of interest.

I have two slip couplings. They are like regular couplings but there is no pipe stop half way through. I have done a dummy run using my replacement length of soil pipe and, with loads of silicone grease, they move along the pipe nicely.

 

[slowmotion]

Make sure nothing falls down inside.

I intend to put a large quantity of yellow tape on the lavatory seat above, and a notice stating "Operative working below"

 

[Profpointy]

I very strongly reccommend against the guard-less angle grinder. If the disc explodes - which isn't unlikely given the awkward nature of the job could easily put a twist on the disc - the you could be very seriously injured given the speed of the things.

Angle grinders are great tools, but, though I've not had it happen to me, exploding discs aren't uncommon I gather

 

[slowmotion]

I very strongly reccommend against the guard-less angle grinder. If the disc explodes - which isn't unlikely given the awkward nature of the job could easily put a twist on the disc - the you could be very seriously injured given the speed of the things.

Angle grinders are great tools, but, though I've not had it happen to me, exploding discs aren't uncommon I gather

Good point. I have never used a fibre disc without a guard. When they go they tend to get people through the carotid artery because the tool is being used at eye height. You die very quickly. I confess to have used a diamond-tipped steel blade without a guard on a couple of occasions, but it's very stupid.

 

[TissoT]

Angle grinder 4 1/2 " you will only be able to get so far ... then finish it off with a good hand saw .

 

[screenman]

Recipricating saw is what I would use. Something like this but with the correct blade for the job.

http://www.diy.com/departments/mac-...74_BQ&ef_id=Vo-yswAABD7rW-pj:20160218213032:s

I should say that I do not need many excuses to add to my tool collection.

Failing that I would go as far as I could with a multi tool and finish by hand, I would have a large circlip wrapped around the pipe as a guide whilst cutting.

 

[fossyant]

I intend to put a large quantity of yellow tape on the lavatory seat above, and a notice stating "Operative working below"

Scene from Only Fools and Horses ?

 

[classic33]

I very strongly reccommend against the guard-less angle grinder. If the disc explodes - which isn't unlikely given the awkward nature of the job could easily put a twist on the disc - the you could be very seriously injured given the speed of the things.

Angle grinders are great tools, but, though I've not had it happen to me, exploding discs aren't uncommon I gather

Not just explode. Time enough for the grinder to stop before it came back down.

 

[raleighnut]

Not just explode. Time enough for the grinder to stop before it came back down.
View attachment 119438

 

[gbb]

Not just explode. Time enough for the grinder to stop before it came back down.
View attachment 119438

Been there, done that...once.
9 inch grinder, cutting a steel sheet I was standing on. I really thought it was supported and wouldnt pinch the disc.
It did...and in a split second....BOOOOM and the disc vaporised leaving me stood in a cloud of black dust. No time to react...less than a second and it was over. No harm

 

[classic33]

Left wondering were it had gone. If it were to happen at waist height?

Been there, done that...once.
9 inch grinder, cutting a steel sheet I was standing on. I really thought it was supported and wouldnt pinch the disc.
It did...and in a split second....BOOOOM and the disc vaporised leaving me stood in a cloud of black dust. No time to react...less than a second and it was over. No harm

Had them explode before, and since. That one had two chances at getting me though.