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How to make a zipper necklace
Cut the zipper off any clothing if you're re-using a zipper from an old garment.
Cut around the area containing the zipper and then unpick the thread that held it in place. Then treat it the same as for the new zipper in the next step.
Cut the zipper in half lengthwise if you're using a new zipper. You only want to use half of the zipper to create your necklace; use your sewing scissors to make a clean along the bottom.