There are several glues to use including polyurethane (Gorilla, Probond), epoxy and Pacer's (and other brands) "hinge glue". Of the three, the easiest to use by far is the Pacer product. It goes where you put it, actually sticks to the nylon of the hinge and dries overnight. It has never failed for me even on 1/3 scale models. Be aware that "dry" rather than "cure" is the operative word for this product. If you use it inside a foam wing it can take literally days to dry. Some people say weeks. In wood, overnight is fine. Both epoxy and polyurethane make a mechanical bond inside the surface holding the hinge in place by physically filling in the hinge indentations. If you cut away a surface, you can peel off the epoxy from the hinge with your fingernail. The same for polyurethane. That means you have to use enough to fill the hinge well without getting any in the hinge pivot. This can be a real problem with polyurethane which foams up as it cures and can get into the hinge pivot if overused. The vaseline method to protect the hinge pivot works with all the glues.