What to do if the zipper no longer closes?

If the zipper no longer closes, there are a few steps you can try:

1. Check the zipper: Look to see if anything is caught between the zipper teeth, such as fabric or threads. Carefully remove any obstructions.

2. Check the teeth: Look to see if the zipper teeth are bent or damaged. If you find bent teeth, try carefully straightening them with pliers.

3. Adjusting the zipper slider: If the slider is loose or doesn't move properly, gently squeeze it together (e.g., with pliers) so that it grips better. Be careful not to apply too much pressure to avoid damaging the slider.

4. Lubrication: Sometimes it helps to lightly lubricate the zipper. Use soap, candle wax, or a special zipper lubricant. Carefully apply the lubricant to the teeth and move the slider up and down several times.

5. Replacing the carriage: If the carriage is heavily worn or damaged, it may need to be replaced. Replacement carriages are available in many haberdasheries.

If these measures don't help, it may be necessary to replace the entire zipper. In this case, it's often advisable to seek professional help, especially with high-quality clothing or bags.