David mentioned a great point about some Vaseline jelly in the joint area. I usually brush a little Vaseline jelly on the hinge joint then hit it with hobby heat gun to melt it .This lets the Vaseline penetrate inside, and with a little exercising the hinge while the Vaseline is cooling off the joint becomes immune to epoxy and also is permanently lubricated. To install the hinges I get a toothpick and put some epoxy inside the hinge hole while going around to make sure the walls are covered with epoxy then put some epoxy on the bottom of the hinge leg and push it in. The excess epoxy that comes out ( a good sign that you have enough) is wiped off. I have never used anything else but 30 min epoxy but I was thinking may be trying poly glue see how it work.