Polyurethane Clear Over Acryllics?

[StoleN GuitaR]

Hey, after ing lots and lots of topics.

I can't find one that answers my question.

I am using an Aerosol Acryllic based Car paint, and I am wanting to finish it with a hard clear coat. from what i understand Poly's are one of the hardest coats and seem to protect whats underneeth.

My question is:

Can Polyurethane clear be used OVER an acryllic based paint as a clear coat?

Also, the Headstock Vynal I have can only be clear coated with Polyurethane.

Thanks in advance!!

StolenGuitar

[axemannate]

You might be able to get it to work without a reaction if you dust on the poly MANY times allowing 15 minuites flash time inbetween dustings before you start to put it on normal.

[StoleN GuitaR]

I don't think I'm 100% up with spraying lingo just yet lol

So if i do a lots of dust coats with 15 mins between dusting coats?

then after it starts to build up then spray it normally?

[axemannate]

Yes, after you get it built up, just go ahead and spray normally. As long as you dust it with clear a bunch of times before you clear normally, everything SHOULD be fine, but you still might want to do a test.

[lovekraft]

I don't know of any compatibility problems between cured acrylic lacquer and 2-part poly clear, but don't take my word for it - ask the guys you're buying your poly from. I know the HOK Shimrin bases are compatible with either acrylic lacquer or poly enamel clearcoats, but that may not hold true for everything. I have sprayed catalyzed auto poly over water-based acrylics (Auto Air) with zero issues and spectacular results, but that's not quite the same.

[AlGeeEater]

Test it on scraps FFS.