To do this, bring the slider to the top of the zipper. You can use a seam ripper to remove fabric stitching if needed. Make sure you remove the zipper stop, if there is one, by cutting it with pliers.
Check for fabric caught in the closed zipper teeth and gently pull it out using a pair of tweezers. If no fabric is visible, rub a light coating of graphite pencil, vaseline, a crayon/candle ...
The legs of the Y straddle the edge of the fabric tape, and a set of dies then crimps the legs to the tape. A modern zipper machine can make stringers at a rate of 2000 teeth per minute.
We’ve all been there. That sad day when the zipper on our favorite hoodie, bag, or pair of pants breaks in some seemingly irreparable way. But there is hope, and [Magic Stitches] is gonna show ...