3D Models Repository?

[WillAdams (William Adams (Carbide 3D))]

Well, one can upload models here — the Gallery seems a reasonably good fit:

Gallery

or, if it’s a 3D printed thing, there’s a thread for that:

Introducing the Carbide 3D Print Library

With a significant number of makers out there owning a Shapeoko, Nomad and a 3D printer, we wanted to set up a place where users could get spare parts if in a bind as well as to be able to share concepts we’ve been playing with which would be suited to 3D printing. We have about 50 models, from Active Project Tray to Z Clamps. We have more ideas and files in the works, but we thought this would be a good starting point. Generally speaking, these models should be printable on most 3D printers.…

or Cutrocket:

CutRocket