Replacing the zipper on a winter jacket
The zipper of my client's winter jacket was broken. It would sometimes zip up, but the teeth would often fall apart. At first, I tried fixing it by squeezing the zipper pull with pliers. That seemed to help a bit — the zipper successfully zipped up and down several times — but the zipper still failed to zip with enough frequency that I realized I had to go ahead and replace it.
I replaced the zipper, which was successful but initially challenging because of all of the many layers involved — main fabric, primaloft insulation, lining, pockets, and the little tab covering the zipper at the top.