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Great Leather Blog

News and information related to Great Leather leathergoods and it's customers, as well comments and photos related to leather care, repairs, and restorations.

Zipper Replacement Stitching

Dena Hamilton - Tuesday, June 02, 2015

Can we hit the same holes when replacing a zipper?

I find that what customers usually mean when they say the "same stitch holes" is the "same stitching line" - which is doable. This may not be perfect every inch of the way, but at Leather CARE Specialists we're pretty good at compensating for leather layer movement. But to say, and mean, "hit the same stitch holes", that's probably not doable for the entire length of the zipper. Oddly enough, this is especially true for the best made jackets. That's because the better the jacket was made, the harder it is to get apart.

Whenever you have to pull something apart the leather stretches and pattern pieces separate. So when we tape the pieces to the new zipper, we'll ease the leather back in here and there for a consistent look. When we sew it, we set the stitch length to what it was originally and start out hitting the original holes. Then whenever the stitching gets off because everything has shifted, we'll make an adjustment and move forward again. All with care and caution. 

Also, and maybe it goes without saying, but since we are sewing the facing blind, it almost always reflects a new row of stitches. When taping the back of the zipper to the facing underneath, we do try to place it so that the needle will hit it's original stitch line as well. (Unless the zipper was not put in well to begin with. It may very well have crooked stitching originally, sometimes two lines if there's been a previous repair). If the zipper wasn't put in very well to begin with, we may try to correct it's placement, intentionally throwing the facing's new stitch line off of it's original one). This is tricky and takes some time.

Ultimately, the leather we can see and have the most control over, should look pretty great. The hidden piece, probably not so much. Obviously since we have to make a choice about which piece of leather will look the best- front panel or facing -it has to be the piece that shows. (Sometimes you'll want the facing to look the best for some inches, on coats where the collar folds over. In which case we'll stitch with the facing on top to the point where the stitch is hidden at the fold, and then stop and turn the jacket over and continue stitching with the front panel on the top). 

As for functionality, the zipper needs to be set far enough away from the leather that the pull will slide easily and not rub the leather, while not being set so far out that the tape is overly exposed, or not caught. The placement of the zipper between the leather layers where the zipper's box and pin are is critical, and is calculated to a 1/16 of an inch. If it's too close to - or -too far from these mechanisms (even if the tape is caught securely), it will be problematic for both the simplicity of use and the life of the zipper. 


  
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