I think the poly base they are referring to is lacquer based paint. It has no hardener. I have watched a friend use it. It is a flat looking PPG paint that is easily sanded. The guys at Radio South do not recommend it because it is not fuel proof. They say that if you happen to drill a hole after you have clear coated your plane, fuel can get in and cause the paint to come up. I have sprayed my colors with two part paint. It is much harder to work with than the one part they are using.

Hal