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Robbie mcmillian
What are your opinion about wet on wet sealers? Epoxy or 2k?
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Robbie mcmillian
That was my thoughts.. I've done mostly production work for the last 20 years and epoxy is pretty slow. I was wondering if the color holdout would be any better with epoxy if time wasn't an issue.
You do get better hold out with epoxy, if mixed 1:1:1 (50% reduction) is relatively fast as a sealer.
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Robbie mcmillian
If 50% reduction is added, does it stay n place pretty good or is it bad to sag/run?
Chad.S
Oldtimer
Really easy to spray at 1:1:1 but you don't have to put it on heavy, spraying it this way you are basically just using it as a adhesion promoter.
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Robbie mcmillian
How would y'all recommend spraying black epoxy 2 leave as a topcoat? I'm doing an excursion and I want it 2 be pretty flat. I'm thinking 2 coats at 10-25% fast reduction?
You will need to experiment with some parts or something before you try to tackle an Excursion. I find that it is not easy to get a consistent level of gloss (or lack there of) on large areas with epoxy. Your spray technique has to be absolutely perfect, or you will see stripes.
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Robbie mcmillian
I do have it all apart and thought about spraying it then putting it together . But I do know that can create a problem 2. Even if all the parts are sprayed at the same time.
It may be doable, but on something that big might as well bite the bullet and finish it with SPI matte black, that will give you a far better finish and take all the guess work out of it, far easier to spray.
B
Bob Hollinshead
You won't get better color holdout from an undercoat I think- it's the protection package in the clear that saves the color
My brain somehow left the color part behind and I replied in general terms about hold out, as in gloss level, my mistake.
crashtech
Combo Man & Mod
Actually I think "hold out" is commonly used as a gloss retention term, but in this case I would use it to mean best uniformity of gloss level. A great reason to use epoxy under matte finishes is that it isolates the topcoat from the effects of differing substrates so that the gloss level will be more uniform over the entire vehicle. Best practice for epoxy sealer in this role would be less reduction (25% or less) and an overnight wait time before topcoating.
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Robbie mcmillian
Thanks guys for all the information! This is a great forum.