A friend told me about a product that sounds interesting, paperclay http://www.paperclay.com/ . A lightweight modeling material that is sculptable, air dries and is sandable. I hear it's being used for fillets, air scoops, scale details, cowls and more (but cowls seems a bit of a stretch to me). It can be cast in a mold or hand shaped. And it's light!

Has anybody tried this stuff? Sounds good, I think I'll have to try it.

Dave