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Mar 25th, 2012
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Weldin plastic gas tank #7498267 04/27/19 05:38 PM
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samsamthemex Offline OP
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Anyone use one? Have any luck? Long term? Opinions?


[b][/b]Just bought my twins a 03 Chevy blazer. Well their fist day with their lic, in their new car, they come home last night with a piece of 3/8 rebar in the gas tank.

Went and drained the tank and went to harbor freight bought the $15 plastic welder. 20 minutes later I have the hole sealed up. Gunna head to Cajun fest and when I get back I will add some gas and see if I fixed the hole.


We will see how good this worked. Might just order a new one and be done with it. Hate to worry about them out on the road and run out of gas. Or worse catch fire.


Re: Weldin plastic gas tank [Re: samsamthemex] #7498295 04/27/19 06:48 PM
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I used epoxy and sheet patches to patch mine. It was still holding when I sold it.


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Re: Weldin plastic gas tank [Re: samsamthemex] #7498324 04/27/19 07:49 PM
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I am in the process of repairing a tank on 48 inch mower. I used a heat gun and the platic welder from HF. I had a 6 inch split caused by sun damage. I heated the area and tooled the split closed. Then, smothed with HF iron.
I pushed the a piece of the wire mesh into the patch for stength.

From what I have learned, fuel tanks are HDPE, recyle type 2. Milk jugs are recycle type 2. I will be adding milk carton plastic next.

But so far so good.

Re: Weldin plastic gas tank [Re: samsamthemex] #7498379 04/27/19 09:16 PM
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samsamthemex Offline OP
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I think I have a small leak still. Gunna give it an hour and make sure.


Re: Weldin plastic gas tank [Re: samsamthemex] #7498469 04/27/19 11:22 PM
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Was the tank empty when you welded it? roflmao



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Re: Weldin plastic gas tank [Re: TCM3] #7498491 04/28/19 12:06 AM
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bill oxner Offline
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Originally Posted by TCM3
Was the tank empty when you welded it? roflmao


Read the OP.

"Went and drained the tank and went to harbor freight bought the $15 plastic welder. 20 minutes later I have the hole sealed up. Gunna head to Cajun fest and when I get back I will add some gas and see if I fixed the hole. "


Quail hunting is like walking into, and out of a beautiful painting all day long. Gene Hill


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Re: Weldin plastic gas tank [Re: samsamthemex] #7500733 04/30/19 08:54 PM
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I have used a self tapping screw and silicone when I had a plastic tank develop a small hole. As for plastic welding the kayak guys do it to repair roto molded kayaks, don't see why it would not work for a gas tank.

Re: Weldin plastic gas tank [Re: samsamthemex] #7539808 06/22/19 01:42 AM
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I bought the same kit from HF and used it to seal the top seam on my 32 gallon boat gas tank and no problems yet. up

Re: Weldin plastic gas tank [Re: samsamthemex] #7541660 06/25/19 11:48 AM
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Sounds like you may have more to worry about than them just running out of gas.....but maybe the rebar was just bad luck on night one.

Re: Weldin plastic gas tank [Re: samsamthemex] #7563000 07/23/19 10:56 PM
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So far so good. Its been a few months and have no prob.

Topwater- chualking it up to a bad luck night. No other prob s so far. Unless you count that time a tree branch fell and broke a window? Out of the blue. Heard a crash and went and looked and a big branch fell on top of their car.


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