Craig, what finish did you put on the plywood? Paint or some other sealer like poly, spar, ????
A sealer which off hand I do not remember the brand but maybe I can find the can out in my shop.
Craig
My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear My truck ....... Respect The Rust If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.