Last tutorial we learned how to shorten a plastic zipper. Depending on your sewing project, you can shorten a metal zipper the same way as shortening a nylon zip. You will need to be especially careful however when sewing across the base of the zipper as it can play havoc with your machine if the needle hits any metal. There is an alternative way to shorten metal zippers. It does take a little longer but it means you don’t need to sew across metal when attaching the zipper to your project.
STEP 1: Measure the desired length from the bottom stopper and mark across. Don’t forget the length of zips is measured along the teeth and not along the zipper tape.
STEP 2: Using pliers, remove the teeth above the mark. (towards the top of the zip). Carefully remove the top stoppers. You will want to reuse the stopper so try not to cause damage.
STEP 3: Reattach the top stoppers by crimping them with the pliers. I found this the most fiddly part of shortening a metal zipper. Alternatively you could add a dab of glue or a few stitches to prevent the zipper coming off the teeth at the end.
STEP 4: Cut across 1 inch above the stoppers.
LEARN MORE ABOUT HOW TO SEW ZIPPERS