Hello all:
I am in the middle of building my tear, a modified Grumman II. 9' long by 5' wide by 5' high with about 7" of underbed storage.
Last weekend I began skinning the interior using 1/8" bendy birch. It's not a plywood, but looks to be a single ply of shaved birch. It came in 4 X 8 sheets. My ribs are spaced anywhere from 12 to 20", and I glued the sheeting to each of the spars and got pretty good adhesion to all of the ribs. After a couple of days I noticed the sheeting was starting to get sort of "wavy" between the ribs. It seems like the bendy wood has pretty good strength across its width, but not so much with the grain.
My question is, how the heck should I fix it? My first thought is to brace it flat from inside, then glue some of the same wood to the outside of the skin with the grain perpendicular to the interior skin. Should this be enough to get the interior skin to hold its shape better? I hate the thought of pulling it all apart to start over and skin it with plywood, so I am hoping someone hear has experience with this type of wood.
Any help would be much appreciated. I will post a few pictures when I can.