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Seperate glued PVC?

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Seperate glued PVC?

Unread postAuthor: rcman50166 » Wed Mar 19, 2008 12:01 pm

Is there a way to seperate glued PVC. Yes I am talking about the standard PVC cement that is commonly used. A quick google search says there isn't, but I have a feeling members may have an answer to my problem. There are no results from using search either. I have to seperate a barrel from a tee fitting. I don't care so much about the barrel as I do the tee. However if it's possible to save both parts I would like to know. Perhaps I should break the weld using the barrel as a lever. Or maybe there is a solvent I could use to dissolve the glue but not PVC. Any tips would be very much appreciated.
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Unread postAuthor: SpudBlaster15 » Wed Mar 19, 2008 12:16 pm

There are tools designed to drill pipe out of sockets, but they are going to cost you a good deal of cash. It would be much easier and less expensive to simply cut the barrel off, leaving a stub of pipe, and cement a coupler on.
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Unread postAuthor: MaxuS the 2nd » Wed Mar 19, 2008 1:01 pm

Basically, you're not going to seperate them...Buy a new fitting.
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Unread postAuthor: fireman565 » Wed Mar 19, 2008 1:56 pm

MaxuS the 2nd wrote:Basically, you're not going to seperate them...Buy a new fitting.


Unless the Tee is glued to the rest of the gun/launcher... :lol:

You didn't mention what size barrel/tee it was. If you had access to something like a dremel tool, you could use a small drum sander after you cut the barrel off to sand out the rest that remains in the tee. In doing this though, you have to really watch what you are doing because any imperfections, as in sanding it too much in one spot, may not let it seal again. It may be a slow process, but if the tee is glued to the rest of your 'investment', it may be worth the time.
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Unread postAuthor: rcman50166 » Wed Mar 19, 2008 3:34 pm

The tee is meant to fit a 3" pipe, the barrel is, to no one's surprise, 3in. also. I don't have a dremel so that's out. And I'm pretty sure it's not worth buying expensive boring tools. So it seems I'll have to cut the barrel and add an adapter. *sigh* I wish it didn't have to come to that.
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Last edited by rcman50166 on Wed Mar 19, 2008 4:13 pm, edited 1 time in total.
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Unread postAuthor: starman » Wed Mar 19, 2008 3:45 pm

And thus the pitfalls of working with PVC, you need to plan assembly very carefully, especially once you have some built-up parts already. PVC coaxials are typically the toughest to deal with along this line. I went through 3 chambers and 2 barrels on my latest GB coax before I got it right.
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Unread postAuthor: sjog » Wed Mar 19, 2008 4:48 pm

There is a cheaper tool, <a href="http://www.spudfiles.com/forums/repair-or-remove-pvc-fittings-t6584.html">try this </a>
EDIT this bit costs about $20.00 us
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Last edited by sjog on Wed Mar 19, 2008 7:29 pm, edited 1 time in total.

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Unread postAuthor: rcman50166 » Wed Mar 19, 2008 4:53 pm

The bit costs $43.56... :(
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Unread postAuthor: OuchProgramme » Wed Mar 19, 2008 6:57 pm

I once used brute force to seperate it..on accident.

I was twisting the barrel around-which was such a pain-, and it broke free
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Unread postAuthor: bigbob12345 » Wed Mar 19, 2008 7:02 pm

Well then it was a faulty weld if it broke with hand strength. You are lucky you broke it before you discovered the problem the hard way.
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Unread postAuthor: OuchProgramme » Wed Mar 19, 2008 8:47 pm

bigbob12345 wrote:Well then it was a faulty weld if it broke with hand strength. You are lucky you broke it before you discovered the problem the hard way.


Maybe...the pvc was quite old actually. Does temperature affect the welding?
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Unread postAuthor: bigbob12345 » Wed Mar 19, 2008 8:50 pm

no it shouldnt unless it cured in very cold temp(below freezing)
And if it is old then I cant think of a way that it happened other than a bad weld which does happen every now and then
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Unread postAuthor: rcman50166 » Thu Mar 20, 2008 9:35 am

Actually, my cannon was born in a cold garage in the winter. Is there a chance I can break the bond with just force. The cannon has lost it's head once after firing, so there may be weak joints. As a matter of fact the ball valve on the "General" has also broken its cement bond. Is there still a chance to remove the barrel by breaking the weld?
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Unread postAuthor: starman » Thu Mar 20, 2008 9:20 pm

rcman50166 wrote:Actually, my cannon was born in a cold garage in the winter. Is there a chance I can break the bond with just force. The cannon has lost it's head once after firing, so there may be weak joints. As a matter of fact the ball valve on the "General" has also broken its cement bond. Is there still a chance to remove the barrel by breaking the weld?


Not if you primed and cemented it properly. Even in cooler weather, the chances are, it's stuck for good.

You've been told several times in this thread that you won't be unwelding these parts. Why do you keep asking? Just plan to rebuild it.
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Unread postAuthor: blind909 » Thu Mar 20, 2008 9:47 pm

i seperate it by putting a hairdryer down the fitting and it makes the pipe so flexible, it comes right out, then just reform the pipe with a dixie cup, marker, other peice of pipe, etc.
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