I'm not sure how many people here have tried this file yet but it should be on the list in my humble opinion.
Space Station 3-D Printer Builds Ratchet Wrench To Complete First Phas | NASA (http://www.nasa.gov/mission_pages/station/research/news/3Dratchet_wrench/)
Barnacules Nerdgasm had a go at it....
https://youtu.be/mvr9a4aZlmU
And I even had a go on my Anet A8
The file is here. Wrench | 3D Resources (http://nasa3d.arc.nasa.gov/detail/wrench-mis)