Continuous process for forming metal zippers. Source: How Products Are Made The machinery that Sundback invented to make his “Separable Fastener” has been much improved since the early 1900s ...

We’ve all had a favorite piece of clothing break—maybe the zipper busted on a parka, or the cuffs frayed on a wool sweater.

You can do this using pliers. First, remove the stitching around the lower end of the zipper with a seam ripper. Be sure to take off the metal stop at the bottom of the zipper without tearing the ...