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Old 09-07-2017, 06:27 PM   #101
canada011

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WORKS!

Wow, just wonderful...
For the ones who are having issues with fish eye during IMC: Feel free to use this HGR5. Absolutely no fisheye even when doing wet coat after wet coat (only flash time in-between). And it also release fine! I did 5 coat of HGR5 prior to IMC.

Thanks DDCompound!
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Old 09-08-2017, 04:29 AM   #102
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We put wax over liquid semi-perm all the time, for a different reason.
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Old 09-08-2017, 01:35 PM   #103
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You can buy the release agent at Wilson Custom Composites. There is no website at the moment. Contact DD Compound.
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Old 11-09-2017, 03:40 AM   #104
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Just had a flick through this thread, so if I am guessing right you can just spray a 2k lacquer into a mould, allow to cure then do an infusion as normal? Currently im spraying a polyester gelcoat into the mould, then infusing a carbon fibre stack with infusion polyester resin.

But if I can spray proper 2k top coat instead of the gelcoat im reckon the surface finish would be a hell of a lot stronger and more shiny.

Am I getting this correct?

Cheers
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Old 11-09-2017, 02:53 PM   #105
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Not really. There's not many 2k topcoats that will work as an IMC, most will delaminate as soon as you flex or try to trim the part. Some do work for whatever reason, though this requires experimentation and nobody can say how long it will last for. Also, because you are using a polyester infusion resin, you also have the high potential of the resin attacking the 2k coating when you infuse. 2k polyurethanes tend to be quite vulnerable to styrene attack until they are well cured. But the better cured the coating is, the poorer adhesion you will get without doing surface prep. Unfortunately this is one of those subjects that nobody can really give a definitive answer on because if you aren't using a product that was developed specifically for the purpose, then it's all an experiment. There's too many different chemicals at play to say how it will work.

And, no matter what coating you use it will only come out as shiny as your mould surface.
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Old 11-09-2017, 11:53 PM   #106
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thanks for that, you have put my mind at rest, though I had been doing summit wrong for years lol
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Old 11-11-2017, 12:28 PM   #107
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Quote:
Originally Posted by canada011 View Post
WORKS!

Wow, just wonderful...
For the ones who are having issues with fish eye during IMC: Feel free to use this HGR5. Absolutely no fisheye even when doing wet coat after wet coat (only flash time in-between). And it also release fine! I did 5 coat of HGR5 prior to IMC.

Thanks DDCompound!
Good news. Now I'm going to turn the tables on you. Would you please be more specific about your process and products used? Did you not wax at all? Thanks in advance.
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