I have used polyurethane glue, the yellow foaming stuff, on dinghies and models, in the form of Balcotan and Gorilla glues , and never had any problems with it. I am however having problems with the current lot, the Titebond version, gluing a 1/8 ply framework together. The glue seems to be sticking and going off ok, but when it has dried the foam is very brittle instead of being tough, and the joints are giving way as I trim the excess foam off. I'm using it just like I have before, but it's simply not playing. I tried damping the wood before gluing, but that doesn't seem to work. I'm working in an outside unheated brick garage, in which tools go rusty if not oiled, so there should be enough damp about. The glue was a new sealed tube bought from the LMS a couple of weeks ago.
Any ideas?
