I have a 35 year old piece whose sides are splitting along the glue
> lines. I want to inject some glue into the cracks and clamp
> it. However, I doubt if regular carpenters glue will hold because
> there is already dried glue in the joint - no way to get it out. Will
> polyurethane glue (Gorilla glue) work or must I go to epoxy. > > Len >
You're not going to be attaching to wood but to failed glue so it will probably fail again. No way to fit a small scraper or something in to get down to clean wood? Epoxy would be the strongest but as noted before, it's akin to building on a bad foundation.