EPS sandwich experiment

Picked up a block of EPS foam at my favorite home improvement center in Sapporo ("Joyful AK", just around the corner from Costco), with the intention of trying to make myself an EPS/wood sandwich board. Most of these types of boards are built with thinner veneers vacuum bagged around the blank, but I don't have that gear, so I'm giving it a go with a low tech approach. I split the blank, put a stringer in it, then shaped the blank into the foil shape. I picked up some 5mm paulownia ply for the top and bottom, and have glued up the bottom sheet. For now, the goal is to get the top and bottom sheets on, clean up the outline, then build up solid paulownia rails, and finally glassing. This is a new process for me, so I have no idea if it'll work out, but it's interesting giving it a go. I throw up more pictures as I proceed...