Hi Merv.Congratulations on the susecfull build and maiden. What a great looking plane.
Tell us more about the wheat board. Yyou said it was light weight when you took the cardboard off. What is in the middle? A picture would be helpful.
this plane is mostly built from "propagandaBoard". The only thing built from wheatboard are the wings. this is my wheatboard.
The material u ask for is what i call "propagandaBoard". it is from a propaganda and publicity workshopin the city where i live. It is like foamboard but with posterboard isntead paper. The core is 5mm Depron which is a really nice material.
Something like this: