Based off a project here: http://www.timey-wimey.com/2013/01/16/the-time-lords-companion-kit/
A very impressive build that was tricky to mimick. But I think it came out nicely. Comes with extended or closed version.
STL (Stereolithography, filesize: 8.18 MB), SLDPRT (SolidWorks, filesize: 4.15 MB)