Well after trying virtually every glue out there and having failures in one area or another, I have finally found the right one--for wood and bamboo, at least. You may laugh, but it is Titebond III. I finally got enough courage to try it on bamboo-backed laminations, and I was shocked at how well it has stood up on locust, osage, Ipe, and elm with bamboo backing. Fine Woodworking recently conducted a strength test on all of the major types of glue, and Titebond III won, hands down. So, the next time I had a glue-up, I tried it. It worked great. Very strong, flexible, good glue lines, cheap, and easy clean up. Try it. I think you will be surprised.