Hi Guillaume,

The foam serves as a stiffner and viber dampening. There is a layer of .75oz cloth over the foam which will protect it wear and increases its rigidity. The Defiant I fly now is layed up like this and has three seasons on it and is still in very good condition.

I'll post pics of the fuse once its out of the mold, everyone will see it's not going to be the pretty white fuselage like the ones produced by kit manufacturers. I didn't prime in the mold so this fuselage will be carbon black and kevlar gold.

Todd