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Old 03-05-2013, 09:52 PM   #1
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Smoothing the inside of a scratched pipe


Hi, I was having trouble removing a Moen 1222 cartridge in my shower/tub faucet, so I decided to drill the whole unit out with a drill bit. I ended up making some indentations inside the metal pipe that houses the cartridge and now the new cartridge doesn't quite work without leaking.

I figured I'd put some epoxy over the channel/indentations I made to try and smooth the inside of the pipe out.

Does anybody have a better idea?

Thanks!

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Old 03-05-2013, 10:02 PM   #2
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Smoothing the inside of a scratched pipe


Replace the whole unit.

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Old 03-05-2013, 10:15 PM   #3
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Smoothing the inside of a scratched pipe


You may be able to clean up the inside with a brake wheel cylinder hone. You can buy one at an auto parts store, and use it on a variable speed drill. Use 3 in 1 oil and kerosene on the hone, and don't go too fast. It may work if the gouges aren't too deep. Clean it out with WD-40 and then wash with water and detergent.
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Old 03-05-2013, 10:15 PM   #4
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Smoothing the inside of a scratched pipe


Is it as simple as unscrewing the nuts and screwing a new unit in or do I have to tear down a wall?
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Old 03-05-2013, 10:18 PM   #5
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Smoothing the inside of a scratched pipe


Jagans, I see. Wouldn't that just make the interior of the pipe all too big for the cartridge and then it would leak all over the place even worse?
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Old 03-05-2013, 10:39 PM   #6
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Smoothing the inside of a scratched pipe


Yes that could make the bore to big.
It's removed from the back side of the shower.
And yes the wall would need to be opened up to get at it.
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Old 03-05-2013, 10:45 PM   #7
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Smoothing the inside of a scratched pipe


It all depends on how deep the gouges are. Think of the cartridge as a piston in a cylinder, and the O rings as well O rings. The O-rings will make up for a little space as long as the cylinder is smooth inside. They cannot make up for a longitudinal gouge that runs longitudinally the length of the cylinder, because water will run along the gouge. You may very well have to replace the whole unit, as Joe says, but the hone may be worth a try. If the unit was installed correctly, a good plumber can replace it without collateral damage to the wall, but its gonna cost you.
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Old 03-05-2013, 10:52 PM   #8
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Smoothing the inside of a scratched pipe


Not doubting jagans, as the hone was my first thought as well, but is it possible for the cylinder hone to close down far enough to fit inside the pipe? I've ever only honed V8's, and even then, the hone consisted of 3 individual arms with polishing blocks on them.
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Old 03-06-2013, 06:05 AM   #9
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Smoothing the inside of a scratched pipe


I think you will need to replace that valve-----
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Old 03-07-2013, 12:58 PM   #10
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Smoothing the inside of a scratched pipe


Well, it seems that I might have to replace the whole valve. BUT... I felt like I was on my way to fixing the problem with some thin carpet tape and epoxy, when the rubber washer thingy on the side of the cartridge bunched up and sprung behind the wall. Now my $40 cartridge is missing one tiny piece and I can't use the thing.

Any ideas for replacing this rubber piece? I can't seem to find it for individual sale, but maybe I could find some stock material and cut it out?

Thanks for your help guys
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Old 03-07-2013, 02:12 PM   #11
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Smoothing the inside of a scratched pipe


Rock, Im talking about a brake slave cylinder hone, Not an engine cylinder hone!!! Never seen one? Same principal, but much much smaller. It sounds like the OP is ignoring me anyway, so its a moot point. I guess he thinks epoxy will fix anything. If I was him I would try the hone, or wire wheeling the inside of the cylinder and fill his goofs with molton solder, then re hone. Or I would just replace the valve. I would have been done with this one a long time ago.
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Last edited by jagans; 03-07-2013 at 02:17 PM.
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Old 03-07-2013, 02:22 PM   #12
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Smoothing the inside of a scratched pipe


Quote:
Originally Posted by jagans View Post
Rock, Im talking about a brake slave cylinder hone, Not an engine cylinder hone!!! Never seen one? Same principal, but much much smaller. It sounds like the OP is ignoring me anyway, so its a moot point. I guess he thinks epoxy will fix anything. If I was him I would try the hone, or wire wheeling the inside of the cylinder and fill his goofs with molton solder, then re hone. Or I would just replace the valve. I would have been done with this one a long time ago.
Whoops! I read the words "piston" and "cylinder", and got sidetracked in my thoughts. I know what you're talking about, just wasn't thinking when I replied.
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Old 03-07-2013, 06:43 PM   #13
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Smoothing the inside of a scratched pipe


You just bought yourself a new faucet.

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