Does home depot or lowes sell a decent plywood for making our boats? I'm working on Steampunk BB, slab bottomed. I am adjusting all the notches in the various pieces in a cad program and need the actual thickness of the plywood so the laser cutter guy can do the cutting and it all goes together well. The rib kit I got from Rcenger was 6mm 5ply, but I'm trying to find a source near the cutter and I'm stuck with either Lowes, Home Depot or having it shipped to him ($$$) There are 2 places in Birmingham that have marine plywood, but delivery may break the price. Anyone have any luck with off the shelf stuff from the big box stores?