Likelihood of yellow plastic bleed-through?

[Monty]

I've read that some of the Ferrari guys use yellow paint under the red top coat to make the red "pop" more. I experienced something similar years ago when I sprayed Tamiya TS-11 maroon directly over a yellow Monogram fender. The fender is long gone, but I now have a yellow Monogram body that I want to use this same shade of maroon on.

In order to achieve the shade I created with the fender, I'll have to paint this body without primer, silver undercoat etc. What is the likelihood that the yellow plastic will bleed through the maroon paint?

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[Quick GMC]

are you using a primer?

[cobraman]

I don't know how anyone can paint a body without using a primer first. I have never seen a body that did not need some kind of body work. Molding seams and sink marks are just about on every kit I ever built. If you do body work you need to prime. There maybe paints that will cover without primer if you don't do any putty work or sanding but you won't get as good a finished product. This is just one guys opinion.

[Monty]

Let's assume I'm going to be stubborn and plow ahead on this without primer, primarily because my prior experience doing this resulted in a better looking maroon. (Donn Yost has made a career out of painting models without primer, and it's kinda hard to argue with his results.)

The main question I was trying to ask was whether Monogram's yellow plastic will bleed through the lacquer paint. I've heard stories about red and orange plastic bleeding through, but I don't think I've seen anything about yellow.

[Cato]

The main question I was trying to ask was whether Monogram's yellow plastic will bleed through the lacquer paint. I've heard stories about red and orange plastic bleeding through, but I don't think I've seen anything about yellow.

To avoid the issue, shoot a coat of Future on the yellow. It's a barrier. Test on yellow sprue with your chosen top color.

Edited April 11, 2013 by Cato

[Quick GMC]

That I don't know for sure.

[MrObsessive]

This is just one man's opinion, but I would advise against just shooting paint over bare plastic. Why? Because paint on plastic looks just like that------paint on plastic. I personally like to have the appearance of a SOLID metal appearance on my builtups. Not to mention, some plastics are rather opaque and if the model is sitting in just the right light, you'll see light shining through the body.

Not a good appearance IMO.

I guess you could avoid this if you paint the inside of the body to get rid of the see through look, but then there's still that pesky plastic-look finish............

Hope this helps!

Edit: Oh! In answer to your other issue-------yes, I have had yellow plastic bleed through lighter colors such as white or powder blues. I would strongly urge giving the body a primer coat to be on the safe side. Better yet, If I were building this, I'd either use Future first or barrier the plastic with BIN Zinsser sealer.

Edited April 11, 2013 by MrObsessive

[Monty]

Allow me to wander a little further out into this swamp. The consensus so far seems to be that I can't use the yellow plastic body by itself to create the "richer" maroon I want to recreate.

If I were to use Cato's idea (Future as a barrier) would its self-levelling properties fill in any low spots on the body?

[Cato]

No it's not a filler. It will level on a perfect surface but settle or puddle into flaws.

Look-fix all the bodywork (including filler), then one coat of Future-

THEN your base color coat. Yellow, gold, white-what ever you want. Wet sand then do your normal top color coats.

Forget the idea of just using the bare yellow plastic to give you the pop you want in the top coat. There are much better ones to use -white or gold under reds-Ferrari uses pink primer.

[Monty]

Well poop! Turns out I'm not as brilliant as I thought. Now I have to call the Nobel Prize people and tell them to hold off on sending my "Genius" medal.

Thanks for all the input!

Edited April 12, 2013 by Monty