This might be a Neander post, but thought I'd start here.
What finish do you find works best on ply used for jigs like a bench hook, shooting board, saw hook, and planing board? I think they need something simply for moisture protection but not something too slick. Shoud add that my "shop" is in a garage with no climate control so conditions change with the seasons.
I plan on adding a strip of 3" UHMW tape on the runway of the planing board for the plane to ride on. That area may get something extra to give the tape a good surface to stick to.
Thanks,
Tom