There is a glue called Resorcinol that is what they use for outdoor plywood, wooden aircraft propellers, wooden boats,etc. it is waterproof, resistant to high heat, won't delaminate and stronger than epoxy. Here's a link to a site that tells about it. I'm not saying it's what you want to use, just putting it out there -
https://christinedemerchant.com/adhe...esorcinol.html