The photo 3502 shows the lay-up of ribs, etc.on the base outline of 1/64th ply, some of the ribs already shaped and others in
their rectangular outline awaiting the razor plane and sanding block. # 3504 is the finished job. At this point I have to flip both
halves over and do the very same mirror image on the other side. I'm hoping with all the main pieces already cut from the side
just completed, this other side won't take quite as long.