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Old 10-05-2012, 09:19 PM   #1
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Poly fresh water tank repair-solder iron

Anyone have success with poly tank repair with poly pieces and solder iron?
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Old 10-05-2012, 11:50 PM   #2
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I did with my 77 Argosy tank, and so did a friend of mine with a 75 Argosy tank. Just melt scrap pieces into the crack as you melt the crack together with the tip of the iron. If it still leaks do it again and fix it.
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Old 10-06-2012, 05:56 AM   #3
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Ventport, thanks for the reply. I did the repair, but still have a pinhole leak. Will do it again, I have lots of scrap, I cut a 5" hole for an inspection/cleanout port.
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Old 10-06-2012, 08:01 AM   #4
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Harbor Freight has a hot air plastic welder for cheap. It might make the job easier. I have used it to repair some door panel cracks on a old car with success.

Good Luck,

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Old 10-06-2012, 08:36 AM   #5
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Thanks JD, I'll check it out! I need a reason to visit Harbor Freight Tools.
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Old 10-06-2012, 07:31 PM   #6
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I have used a small gas torch (gotta be extra careful), we also have hot air welding guns at work that I have snagged before. The ones we have are the Leister brand. I use a very small tip and plenty of fill material. I have repaired a couple of different types of tanks with success.

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Old 10-07-2012, 02:46 PM   #7
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I went back over the pinhole leak again, added more plastic. It is holding now with 1/2 tank. The leak is at the bottom at the hump to stop water movement. Will fill to the top, give it 24 hours. If still holding, back in the trailer it goes. Thanks all for the responses.
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Old 10-07-2012, 04:49 PM   #8
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There's a number of youtube videos on plastic welding that might help...
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