I remixed just some extra brace to mount.
You can print without supports selecting stl with tree supports.
edit 130318: v2, v3, v4 deleted.
edit 140318: added v5: tree supports removed, added some cable loops, one hole filled.
More pictures later!
You can play with resolution and infill.
I did print 0.15mm/50%/5 perimeters/5 layers, from PETG without supports.
Print it from PETG or ABS.