This is a remix of: http://www.thingiverse.com/thing:24203
I edited the original a bit, some modeling (the top wasn't all there), scaling and rotating. I also added a version with support beams.
-- Edit 06-09-2014: I added a requested lower poly ''light'' version of the supported model (SphinxSupportLowPoly.stl). --
I used B9creator (http://b9creator.com/) for support and MeshMixer (http://www.meshmixer.com) for edting and making the model solid after supports were added.
The author marked this model as their own original creation. Imported from Thingiverse.