sawz all blades

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Old 05-22-13, 10:02 AM
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sawz all blades

Do they make recipricating saw blades that can cut 4" cast iron soil pipe? Thanks for any help.
 
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Old 05-22-13, 10:13 AM
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Lennox makes a diamond blade that will cut cast iron.

You can also use the standard bi-metal blades but it may take several of them to get thru.

Remember.....when cutting a pipe of that size it must be well supported otherwise when the blade is just about thru the pipe it can become jammed by the heavy pipes shifting.
 
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Old 05-22-13, 10:19 AM
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I'm cutting the pipe just under the floor that leads to a closet flange, so it shouldn't get jammed. It's between rafters so there's no room for a portaband. Thanks for your help.
 
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Old 05-22-13, 10:27 AM
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Any reason your not using a chain cutter. It will pop it off nice and straight in about 1 min.
HD rents them.
 
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Old 05-22-13, 10:48 AM
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The pipe is pretty tight to the rafter about 1". I doubt if chain cutter would fit. Thanks for your help.
 
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Old 05-22-13, 12:48 PM
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Fastest after a chain cutter is to use an abrasive cut off wheel in a hand grinder. A sawzall will get it but have a helper to give your arms a rest because it's slow cutting through cast iron. You will go through several blades so buy more than you will need and return what you don't open.
 
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Old 05-22-13, 02:10 PM
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I have used tungsten carbide Sawzall blades. You do not need to cut through if you are feeling lucky. Score all the way around and tap with a hammer. One blade may be enough since they don't have teeth

Example: Milwaukee 48-00-1420 Sawzall Blade Tungsten Carbide 6-Inch Length - Amazon.com
 
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Old 05-22-13, 08:57 PM
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when cutting cast iron with a recip saw, I have never had any problem using the heavy metal blades, and cut slowly.... when u run the saw at high speed it just burns the blade up. A little honing oil won't hurt.
 
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Old 05-23-13, 06:33 AM
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Thanks for your help everybody
 
 

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