Zipper issues

[Joost]

Hi there,

 

I'm working on a bag project and applying zippers on a curve. However the zips end up wavy when I open and close them.. See video attached.

Anyone any idea how to solve this?

 

[Mulesaw]

@Joost

Many people here (myself included) are sceptical in clicking on links. So if you can take a picture or two and post, it will probably generate a response. Plus it will make sure that the thread will still be meaningful in a couple of years since links tend to go bad over time, and a picture in the post will still work :-)

I haven't looked at the video/link, but if the curve is tight, it can sometimes help to make some relief cuts in the fabric of the zipper. Just cut straight in from the fabric side and leave maybe 1/4" of fabric next to the teeth of the zipper. That is how it is done on e.g. riding boots that have the zipper down the front to make it able to follow the curve of the foot.

Brgds Jonas

[Northmount]

2 hours ago, Joost said:

I'm working on a bag project and applying zippers on a curve

Moved your post to Sewing Leather

[bruce johnson]

A few things can cause that. One is the tension on the leather holding the zipper may be different side to side and that causes the one side to curl a bit when it is open. The other may be the amount of zipper tape that is stitched. Again if the tape is sewn with a wave that can tension or throw excess into the tape when open. Overall, it is probably way more noticeable to you than a customer. Still things to watch for when assembling. I had heck with this same problem when I was doing a lot. Back in the dark ages we used glue and usually two coats on the tape to hold our zippers in place for fitting and sewing. Now my wife takes it up and double sided tape makes it much easier.