I have updated my old zipper slider model, mostly to make it look better, but also to add some strength in certain spots. I then modeled the rest of the zipper and printed it at 400% scale. Why? Well thats a good question, isn't it. 

The zipper slider can still be printed on an FDM printer and used as a spare part as with v1. The rest of the parts can be printed on an FDM machine, but SLA would probably be better. I haven't made a full zipper at normal scale and do not plan to. If you do, please post pictures. I'd like to see it.

Also, when assembling the zipper, do not use a stretchy fabric. I used cotton from a T-Shirt, which was very stretchy and made the zipper very clunky. You're better off using a non-elastic fabric.

I don't have more complete assembly instructions because I don't really know the best way to put it together. Still, here's the method I used:

• I used strands of TPU and ran them through the t-shirt cotton to add structure to the cotton and help keep the zipper teeth aligned. 
• I then used a 3D printing pen to glue the teeth in place, one by one. While gluing the pieces in place, I had to stretch the cotton a lot to make sure it wouldn't stretch while the zipper was being zipped. This was the major downside of using cotton, if it isn't tight then it will stretch while zipping and the zipper will be loose and clunky, and all the extra tension makes the zipper want to curl. All around a bad time, don't use stretchy fabric.

If you have a better idea how to assemble this, please let me know. Any suggestions are welcome. You can also modify my models as you see fit. The original document is available on Onshape by folowing the link below.

Link to Model on Onshape: 
https://cad.onshape.com/documents/cece6e3cd73adfcbf6733816/w/b4a2588f4583168dd6745492/e/db3e1b7bd9db7e8b168a8cfa

V1 model:
https://www.myminifactory.com/object/3d-print-32708