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I mixed up some polyester resin to coat the plywood on the new deck for my boat. Why is it that, within a few minutes, it was hardening in the cup and within 30 minutes it was hard as a rock while the resin that I had spread on the plywood was still sticky hours later?
I hope it hardens up before I get home tonight so I can apply the carpet and get the deck back in before the weekend.
because it is much thicker in the cup and can build much more heat as it is kicking off.......if mixed to hot and deep in a cup it can catch fire...it will smoke and smell horrible (hotbatch) ......if you are going to leave unused catalyzed resin in a cup or bucket that has some depth to it pour water over it to be safe, it will still kick off under water....
Good info. I better mix up smaller batches.
a proper mixture is 10cc of hardner to 4cups of resin..!!!! i do fiferglass for a living