Eric, Since the spars are the key structural part of the wing, the foam is really only there to provide a place for the skin to bond to. You can use whatever foam you want, though things like location and type of things like fuel tanks will play a part in that decision, ultimately it's up to your own preference, so if you wanted, you could in fact use polystyrene and hot wire is to your liking. Cheers. Pete.
E.D wrote: > Hi, > > I would like to know what kind of foam to use in kr2 building > uréthane,styrène,polystyrène or polyuréthane ???? and what density > I know the foam must not be cut by hot wire because about production > of toxic gas (cyanidrique gas) > Some people can tell me what ref.. of foam i must to buy from aircraft > spruce. > Thanks. > Eric Dewet. >
