RE: Foam wing Lay Up
I did it once with white foam. By the time I had inserted spars, balsa L.E. etc. it came out very heavy. The wing had a finish like a golf ball. I could have used the mylar procedure but then none of the excess resin would have ben soaked up. As has been said before it was very susceptible to denting with just finger pressure. So now I had a dented golfball.
Ed S