Replacing Bottom Zipper Box?
Is there anyway of repairing or replacing the bottom box of the plastic coil zipper of my Patagonia Nano Puff jacket? Can I do it or do I need to send it back for repairs?
You can't repair the bottom box of the zipper. You will need to replace the whole zipper.
You can follow the steps in the following guide to replace the zipper. The process will be slightly different due to the layers of the jacket. It should be easier than these steps, because there won't be any loose feathers.
If you are stuck of need further help, you can contact Patagonia customer service.
Good luck and let us know how it goes!
You can look on aliexpress or one of the other sites that have zipper insert pins and boxes. They are very inexpensive and if you can carefully take it off the current zipper, withouit fraying the fabric etc., then you can put a new zipper box on with a plyer. If it frays would suggest after you receive your zipper boxes and pins, then reincforcing it by bonding a lightweight nylon material with some sort of adhesive like superglue and then using a sewing machine to add a few stitches for strength. You may even want to put s little bit of sugru, epoxy or something on the fabric bottom of the zipper to stop any further fraying as well as to bound all layers together.