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Old 07-06-2016, 12:18 PM   #1
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Patching a tank fresh or grey/black

Has anybody tried welding cracks or holes in tanks? I tried it last night, I drilled a hole at the ends of the crack and used a soldering iron to melt it back together.
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Old 07-07-2016, 09:41 AM   #2
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I bet Marine 3M 5200 would seal that right up, and it would never leak.
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Old 07-11-2016, 12:46 AM   #3
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I welded two cracks the same way using cut up plastic bucket strips as welding rod to help fill the grove. As long as it all melts together it should be fine.
Now you need to eliminate the force on that neck that caused it to crack in the first place.
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Old 07-11-2016, 10:46 AM   #4
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It's the tank drain I don't see where it would have any external force but i'm plaining repiping it anyway
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