My motorcycle jacket is well past its end of life but I keep it on support. The original metal zipper slider (aka car) started bending internally until finally it wouldn’t work any more. I replaced it with a 3D printed version. Modeled in FreeCAD. Printed in PLA+. I planned to print in something else but as usual PLA turned out more robust than I expected, it has been years since I replaced it. It’s better than the original metal part.
This design is on printables as well.
![Original zipper slide car](https://gurumeditation.org/wp-content/uploads/sites/6/2022/02/gm_zipper.jpg)
![Zipper slide car 3D CAD view](https://gurumeditation.org/wp-content/uploads/sites/6/2022/02/gm_zipper-1.jpg)
![Zipper slide car on jacket](https://gurumeditation.org/wp-content/uploads/sites/6/2022/02/gm_zipper3.jpg)
![Zipper slide car on jacket](https://gurumeditation.org/wp-content/uploads/sites/6/2022/02/gm_zipper2.jpg)