I am curious as to what you all think about something. I am building a sail rig and the plans call for 9mm plywood to be used for the bulkheads and then 9mm ply laminations on a couple of small pieces.
I am building from the plans and have a lot of scrap 4mm ply laying around. My question is which would be stronger, bulkheads made from 9mm or from 8mm made from two laminated 4mm pieces? I was planning to fiberglass the bulkheads whichever way I go. The main reason I would go for using the 4mm is because I can save a bit of money not having to buy a 9mm sheet of okume.