How do zippers work? How can you repair a loose slider or a broken zipper?
To fix a zipper you must first determine if it is just stuck, jammed, or broken. If you cannot tell, start with the idea that it is jammed, try fixing that, then move down the list if your zipper does not repair. Here is a list of symptoms and ways to fix the problem.
1. Zipper is stuck.
If you have a metal zipper and it is stuck in one place, it might not be broken. Try rubbing the zipper with a candle or paraffin. These will loosen the metal slider, so the zipper will glide along the teeth once again.
2. Teeth and slider do not match up.
If the zipper and teeth are separated and you cannot get them back together, try opening the teeth at the base of the zipper. When you do this, drag the zipper/slider to the base of the garment. You should be able to pull it below the toothed edge, and back up again. Once you pull it back up, it should work properly again.
3. Slider is missing.
There isn't much you can do about this except replace the slider; this is the metal thing you pull to get your zipper to go up and down. All you need to do is loosen the stitching around the slider and remove it. Sew the new one in, and line it up with the teeth. It should work just like the old one.
4. Zipper is jammed.
If a candle or paraffin doesn't loosen the zipper, it's time to replace the zipper. You will need to buy a repair kit. This will include a new zipper and matching thread to sew it in. Select the style and color you want. All you have to do is cut the old zipper out, and sew the new one in.
5. Zipper is missing teeth.
If you have a few missing teeth in the zipper, it shouldn't jam the zipper. If you have several missing, it probably will jam the zipper. If so, it's time to replace the zipper. Just follow the directions in step 4.