I guess you could say that. I use it in a spray can, and it flows out nicely. It dries to a nice, slightly flexible, glossy enamel-like finish. It's only drawback is the time it takes to dry and become fuelproof. I've not used it over balsa as Clean mentions, but I have used it over Ultracote plastic film on my Great Planes RV-4, and I love the results. After 2 full seasons, it still looks new. Some details and pictures are here:

[link=http://www.rcuniverse.com/forum/Finished_my_RV%2D4/m_1896658/tm.htm]http://www.rcuniverse.com/forum/Finished_my_RV%2D4/m_1896658/tm.htm[/link]

My reason for going with Rustoleum for that project were primarily economic. In New England, spray Rustoleum can be had, at Home Depot, for under $5 a can, and the stuff at the hobby shop approaches $10 a can.

Phil