Can you edge join plywood together? I found a guy who has loads of baltic birch offcuts. Super cheap, ...but they are 1/4" thick, and only 12" wide. 20 cents a square foot.
So I'd have to double up the thickness which is no problem.
Would I be able to get a strong face joint if I run them through the jointer and glued? Or would I need to add pocket holes and biscuits?
Or I could keep the plywood as 1/4", and cut 2 halves of each 1/4" piece with the cut going N-S, then do the same thing, but with the cut going E-W. Then when I glue everything together, it will have joins like brickwork.