One of the sliders for the chest strap on my Osprey Quasar backpack snapped when I tried to adjust it.

I briefly looked into getting a replacement from Osprey but it was far easier to model and print a replacment...

Took five revisions before I had good fit - but with a print time of about 10 minutes and the first revison discarded in the slicer it was a quick fix.

It's made to fit my Osprey pack, but i've also fixed another back back with the same problem so with a bit of luck it a standard for back packs.

Tinkercad link: https://www.tinkercad.com/things/b8J4LQyMwJr