What happened was I ordered a molded plastic zipper. What's wrong with that? With plastic zipper teeth, they are extremely difficult to detach from the zipper without breaking. What is more important is the top stoppers, which I need to reattach to a new position. I thought I was doomed when I suddenly caught sight of an old handbag which I am not using anymore. It has been hanging around for ages and I always think I would throw it away next time I do spring cleaning. I felt so grateful to my being a packrat at that point ... I need the zipper from that old bag:
Sure you can buy these top stoppers, but you have to order at least 25! So, you need a little tool called long nose plier to get them out of the old zipper. Remember you have to be really gentle in handling these metal stoppers, otherwise, you would break them. Then, mark the desired length on your new zipper and pluck the teeth out of the way using the plier (having strong arms certainly helps here!), making space for the top stoppers, which you gently fasten them to position:
When both sides of the zippers are adjusted to the desired new length, you just cut along the dotted lines and you have a customized length zipper:
So lesson learned this time: Don't throw away old zippers, especially metal ones.