Gel Coat Issue


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Svtmustang01
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Hello,

I am using a plug that is sealed with 2k primer and 6 coats of easy lease release agent.

I applied a coat of easy composites high temp gel coat and let cure for 1.5 hours. Came back and it's no longer tacky...
The sun had moved and heated the molds. Should I be concerned applying the second layer of gel coat in fear of delamination between gel coat layers. Reinforcement is el160 high temp epoxy with 2 100gsm and 3 450gsm fiberglass layers.
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Svtmustang01
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Hanaldo - 3/24/2018 11:48:14 PM
Is it a small mould, are you wasting much gelcoat if you start again? It is better to start again, so if you're only wasting a little bit then that is what I would do.

If it is a large mould and you can't stomach throwing the gelcoat, you can get away with scuffing the gelcoat up with some 80 grit. You need to be very careful to not pre-release the gelcoat, which will happen quite easily when using Easylease, so just use minimal pressure. Be sure to sand the surface well, but obviously don't go through to the pattern underneath!

This is not as good as the chemical bond you would get with proceeding at the tacky stage, but will give you a useable mould if you are only wanting a small production run.

Without any reinforcement on the gel coat, what would be the best method to remove the gel coat without damaging the plug?

Thanks for the help btw!

GO

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