I did have two Guilows Balsa building boards that where great to build on. One of them was in pieces and I didn't use it except to build tail feathers for my different airplanes. Well two years ago i moved 350 miles to the north and had both boards with me. But when I moved to my current house the one I use the most just vanished and I have no clue where it went. So A friend from Lowes where I work said he put the broken board back together for me.He cut both sides on a table saw then he cut biscuit slots in it then I glue both half's together and that is what I am build on now. Everyone that I talk to here where i live said they used sheet rock laid out on there build boardS to pin to and I going to try this on my next project.
Michael