This stuff works great on old license plates that I have restored. It is expensive, but it works great. I try to have a few things to clearcoat when I use it so that I can get my money's worth.

http://www.spraymax.com/index.php?id=361&L=1

It is a two part automotive clearcoat. Results on small projects can be as good as with a gun. Once you pop the seal and mix in the catalyst, it has a 48 hour shelf life. This can be extended another day or so by keeping it in your refrigerator.

I would not recommend the 2K Rapid Coat. It is VERY fussy about flash time. The regular 2K is more forgiving. I allow about 20 minutes flash time between coats.

Matt