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Tried using a cheap underwater epoxy to fix a small crack in a dive helmet

Got this stuff from a marine supply store in Tampa, said it would set in 15 minutes. Mixed it up, slapped it on the visor frame, and it started bubbling like crazy, turning into a weird foam. Ended up looking like a science project gone wrong and I had to scrape it all off. Anyone know a good, fast-setting epoxy that actually works under pressure?
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2 Comments
beth_martinez52
Yikes, that sounds like a total mess. So you're saying it foamed up right after you mixed it, even before it got near the water? That's wild. Did the two parts of the epoxy look or smell weird when you first opened them? I'm wondering if it was just a totally dead product.
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ryanf66
ryanf661d agoMost Upvoted
That bubbling foam thing is a classic sign of a bad mix ratio or a really old batch. For something holding pressure on a dive helmet, a 15-minute cure time is way too fast for any real strength. You need a proper marine epoxy rated for constant immersion, even if it takes a few hours to set.
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