Advice for Createx adhesion on lexan

lifeofbrian77

Young Tutorling
I've tried a few test strips and I am fairly happy with the paint, I can bend the lexan and mask it with no problem, but it does scratch off easier than I'd like. I tried putting down clear Autoborne Sealer first but that made no difference. I have a piece that I painted three weeks ago and that comes off just as easy as the one I did today. I compared the Createx paint to a pre painted FTX bodyshell, and I'd say that the pre painted shell is twice as tough on scratches. Could it be that I'm putting it on too thick and not giving it chance to cure properly? I don't think I am but maybe Createx needs a very thin coat, every time I use Tamiya lexan paint in a spray can I just chuck it on and go.
 
4030 will definitely harden the paint more.
I know the thicker the paint is the easier it erases and scratches so maybe try just a dusting.
 
Hmmm as far as I know the autoborne sealer should chemically bond (? may be an assumption on my part) with a surface and that is why it needs no primer etc. How are you reducing? Are you using 4012? This really helps dry the paint, and gives a tougher cure. I'm not as experienced with 4030, but I believe this helps even more. If layers aren't dry before the next goes on then it could come off I guess. Have you tried giving it a quick blast of air with the airbrush just to make sure? I've layed down some pretty thick paint before but admittedly not on lexan. Was it degreased etc first?
 
I have seen many recommendations for some additive when spraying on lexan... It might have been the 4030? I'd have to go hunt it down.
 
Thanks for all the replies. Sorry I forgot to mention that I'm painting radio control car bodies on the inside, so most of the time I'm looking for a super glossy look.

Taking a look at the pre painted body I bought, I'd say it has been lightly scuffed, I also remember reading that 4030 can help adhesion. I'll try these two and see what happens. :thumbsup:

Brian.
 
The gloss will come from the outside of the shell, not from what you paint on the inside of it. Unless you use coarse sandpaper your prep shouldn't show through
 
You don't want to use anything too harsh- most people I know use a scotchbrite pad and *lightly* scuff it. Also make sure to wash the body with dish detergent- mold release agents can really screw up a paint job. A good "basecoat" (painted after you do everything else) also helps with chipping.
 
When I scuff the body, do I use circular motions or back and forth, or doesn't it matter?

You don't want to use anything too harsh- most people I know use a scotchbrite pad and *lightly* scuff it. Also make sure to wash the body with dish detergent- mold release agents can really screw up a paint job. A good "basecoat" (painted after you do everything else) also helps with chipping.
 
Hm, I have done many bodies and never scuffed any of them. I use all Createx and then just rattle can clear to lock it all in. I have had bodies tear the paint just tore with it, never let loose or pealed. Just make sure you wash the in side to get all the model releasing oils off and you should have no issues. Also, yes, make sure you don't spray too much at once. Layers are your friend here (like most AB work).

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