Try this: Put your flake back. If you have not crushed the edge, re abrade and hit it again. It will act like a punch and blow the hinge off. It will actually go further because you have already removed half of the flake. It must be the flake that came off and must be fitted back exactly. If you can't find the flake, use a piece of copper that is hammered flat. Tubing or wire will both work. Bill