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ScooterV

Cutting SDR 21 PVC without crushing

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ScooterV   

I've never had much of a problem with plumbing, but ran into one I'm nervous to do now :(  I've had no issues with flex, sch 40 or sch 80.  In my return plumbing though I used a lot of 1" SDR 21.  Why?  Ummm, well, I found 12 feet of it in the attic so it was free, lol.  Issue I had though was when using my PVC cutters the thin walls would crush before it finally cut through and made gluing into fittings a pain having to squish it back round.  No huge deal, except now I need to cut into while already in place. 

I'm not getting enough flow through what will be the fuge via my open channel without it getting noisy, so I want to tap into the return line with a Tee then ball valve to adjust it to wherever I like it. 

So, before just attempting something that could end up being a pain or replacing more than intended thought I'd see if anyone had any tricks :)  I considered my recip saw but it would be difficult to hols and control it while also holding the pipe.  Maybe my jigsaw, but it's close enough to the underside of stand not sure it would work.  Maybe just filing a better edge on my PVC cutter and what I'm hoping someone will say worked.  I just don't want to sharpen it up to discover it didn't really change much.  I do have enough unions where I could remove the entire 7 foot length but will take some creative body contortions to do that :)

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Bigdog   

Since you can't get power saws to it easily you could use a rope/wire saw and it would cut it quickly. If only one or two cuts you could even use a piece if string to make the cut. Just pull each end back and forth like the wire saw and it will work. Once you get through a side wall it cuts pretty fast.

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ScooterV   

HA, you just triggered something.  I have a little mini-hacksaw my grandfather used building ship models.  If I just get through one sidewall the PVC cutters should do the trick to finish it :)

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TrentN   

A multi-tool works good.

Another thing is when using a PVC cutter, press down with out trying to cut it then turn. It goes thru like butta.

Sent from my SM-J700P using Tapatalk

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nolefan   
9 minutes ago, TrentN said:

A multi-tool works good.

Another thing is when using a PVC cutter, press down with out trying to cut it then turn. It goes thru like butta.

Sent from my SM-J700P using Tapatalk
 

Press down gently make a turn with it and it will cut without cracking 

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ScooterV   

Thanks all!!!  When trying the little "twist" when doing the initial plumbing it didn't seem to work.  My cutters likely dull.  I think I'll sharpen it up, but if it doesn't appear to be working stop before I crush it and use the little mini saw to at least get through a bit of sidewall.   Will be a bit until I try it, I don't want to make a change right before a work trip.  If it's going to leak it will do it as soon as I'm gone and the wife finds it, lol.

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scott79   

As said in a previous post wire saw or hack saw works best for thin wall pipe, the blade from a pvc ratchet cutter applies to much pressure and eggshapes the cut, unless u have a really sharp blade....ie u sharpen them urself. Most blades that come with those cutters are sharp but not that sharp.

Scott.

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