If the slit where the hinge goes is tight, I'd use thin. I'm assuming you are using CA type hinges. If the slit is sloppy, you might think about epoxy. In event of thin CA a few drops on the hinge from one side, then a few from the other side should do. I have never had a hinge tear loose. Use a pin to make sure you get even distribution of the hinge; half in one edge, half in the other, then remove the pin when set.