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Cutting cast iron from inside?
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Posted by
mike99gt (
My Page) on
Sun, Jun 6, 10 at 22:45
| I'm trying to transition from 4" cast iron to ABS using a fernco. The end of the cast pipe is pretty jagged and can't get a good seal with the coupling. How would I go about squaring the end of the cast iron? I've attached a picture to better show the situation. Thanks, Mike
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Follow-Up Postings:
RE: Cutting cast iron from inside?
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| The pros always seem to have a nifty answer to this but it might be as simple as breaking up more concrete - most of the time I'm working in brand-new construction and half the time the plumbers are breaking up part of the floor slab! Seriously, though, I guess there's not enough room for an angle grinder, but I wonder if you could use a Dremel-type tool? I suspect it'd take ages and you want to use adequate face/eye protection as this can be a dangerous procedure. |
RE: Cutting cast iron from inside?
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| You could get a 4" angle grinder in there and cut from the inside. A worn wheel would fit better. You can also use a cut-off .045 wheel on the same grinder. That would be my choice. |
RE: Cutting cast iron from inside?
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| HD has a flange assembly that slips into the pipe and is sealed with 3 gaskets on the outside. No idea if it's code, but I used one for an upper floor and it solved the problem. Not sure about using it on the ground floor, though. |
sorry
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| I just realized you may not be using it for a toilet. Sorry about that. |
RE: Cutting cast iron from inside?
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| How big a line are you trying to connect with? A donut would slip inside the iron pipe and have a hole for the OD of the mating pipe. |
RE: Cutting cast iron from inside?
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| Ended up going at it with a dremel and cut off wheel(s). I scored a line and broke the chunks out with a hammer. Made a somewhat clean cut but it took a while. Thanks for the suggestions everyone on to the next part of this never ending project :-) |
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