http://www.rcuniverse.com/showthread...ght=foam+paper
here you'll find some more info

for a clearcoat i use a water based "varnish" for wood, the type that looks milky in the can. before this i use normal acrylic house paints and magic markers for my color schemes. if you like cheap, quick, light and strong (who doesn't) give this a try, you'll be hooked.

davee