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Cutting cast iron pipe

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Cordell in AR

02-14-2002 11:59:21




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What is the best way to cut a cast iron pipe coming out from under a concrete slab? I have heard that a hammer and cold chiesel is the way to go.




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Trucker

02-21-2002 18:57:51




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 Re: Cutting cast iron pipe in reply to Cordell in AR, 02-14-2002 11:59:21  
If you still need to cut that pipe,I did that once with a grinder and a cutoff wheel.They make different kinds of cutoff wheels I found out afterwards.If you get the right one thats made for cast iron it cuts real good.It is dangerous as far as all the sparks are concerned,but it doesnt take very long with the right wheel.



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paul

02-15-2002 04:41:46




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 Re: Cutting cast iron pipe in reply to Cordell in AR, 02-14-2002 11:59:21  
forgot to tell you, if the pipe is rotted out , a hack saw might not crack it too badly, you should put a 2x4 inside the pipe to not let the pipe smash,or just crumble if you use a cast cutter . depending on what shape the pipe is in.



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paul

02-15-2002 02:29:10




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 Re: Cutting cast iron pipe in reply to Cordell in AR, 02-14-2002 11:59:21  
tom has your answer. rent a cast iron cutter. it is made to cut cast. saves hours of messing around with a sawsall or hammer and chisel. it will make a nice cut so you can use a series 3000 band , then go to plastic. have used them all at different times. i plumb for a living. all youll need is a pair of glasses. takes 10 minutes.



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Tom R

02-14-2002 18:20:11




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 Re: Cutting cast iron pipe in reply to Cordell in AR, 02-14-2002 11:59:21  
If this is 3" or larger Cast Iron, go to your local rental place and rent a Cast Iron snapper, or have a local plumber come in and snap it for you. These snappers have a chain that wraps around the pipe, then you turn it a little to score the pipe and then just squeeze the long handles and the pipe is snapped in only a few minutes. It is the safest and easiest way.
Hope this helps Tom R.



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Mac

02-14-2002 17:08:03




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 Re: Cutting cast iron pipe in reply to Cordell in AR, 02-14-2002 11:59:21  
Dont know what $ you want to spend, but I have used a hydraulic chain type cutter which works on cast very well. You can use a gas, portable concrete saw with a good cut off blade, or you can use the hammer amd chisel but you need to scribe the pipe all the way around, like previously mentioned, a sawsall with a good blade. Probably can rent the above.Use eye protection in all applications, and gloves as cast is pretty sharp.

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Bus Driver

02-14-2002 16:23:18




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 Re: Cutting cast iron pipe in reply to Cordell in AR, 02-14-2002 11:59:21  
I have encountered some cast iron pipe so hard that it could not be sawed. I had to cut a 4" pipe buried in the ground to move the riser back about 2 feet. Used 8" abrasive cutoff blade in a 7" portable disc grinder. Jury rigged way to tighten it on the spindle. Had to remove the guard. This is Dangerous procedure, no doubt about it. Used full face shield and wore heavy jacket. Just fed the wheel into the pipe and cut the pipe same as the abrasive cutoff machine would do. The results were perfect and no problems. Extremely clean cut.

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T_Bone

02-14-2002 18:06:14




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 Re: Re: Cutting cast iron pipe in reply to Bus Driver, 02-14-2002 16:23:18  
Hi BD,
I also use a 6" x 3/32" cut off wheel on a Makita 10,000rpm side grinder and as you say they are very dangerous even with a full face shield, leathers and holding the grinder with both hands. We have a saying "if you smell leather burning, it's time to go get stiches" as it's already burned thru your gloves and some meat.

That being said, I couldn't live with out my cut off wheel when working SS and AL as it's the only way to go. Very fast and cost effective.

T_Bone

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Unimog

02-14-2002 14:32:45




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 Re: Cutting cast iron pipe in reply to Cordell in AR, 02-14-2002 11:59:21  
You can use a sawzall type saw with a metal
cutting blade. It goes pretty fast if you can
reach it properly. A hammer or better 2 hammers,
one to buck it, works fast if your just trashing
the pipe. Hammer and chisel work if your saving
the pipe. Tap or score all around then break like
tile or a brick. No matter what, wear safety
glasses.



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Cordell in AR

02-15-2002 18:00:33




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 Re: Re: Cutting cast iron pipe in reply to Unimog, 02-14-2002 14:32:45  
Thanks to all for responding to my question. You have been of great help to me and your responses are appreciated.



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