I'm not a fan of woodworking but I need to make a lensboard for an old camera. It need to be about 9" square and about a 1/4" thick.
It must be as flat as possible and I was thinking about bonding two sheets of 1/8" plywood from an aircraft supply place with a 90 degree twist between the sheets to try to minimize and of the warpage the sheets already have. They're always an odd number of layers anyways.
It seems they make the stuff with some sort of epoxy to start with, and there seem to be a variety of similar adhesives such as a powder you mix with water that has a poor shelf life and then the standard two part epoxies where you throw most of it away when you're done.
Any favorites here that people use that are not affected by moisture and come in really small quantities? 100 sq inches of coverage is all that's needed.
I'm open to bonding the sheets with heat+pressure if there's some type of spiffy thermoset adhesive out there that comes in really small quantities.