4 Ways to Fix a Door - wikiHow
You can fix really rusted hinges by taking out the pin and cleaning it with WD-40. If the pin is bent, you can tap it lightly with a hammer to bend it back. In really rusted hinges, take a piece of sandpaper and sand off a coat of rust off the pin until you see the color of iron. You can also fix a broken door with Elmer's glue and a few clamps.