The
tower we used for our robot works pretty well (my very humble opinion, of course!).
(This assumes you have Autodesk Inventor 8 or later):
The CAD files are pretty large, and the assemblies consist of quite a few files, so your best bet is to download them from
Autodesk's Streamline Site [username "(public)" , include parentheses, but not quotes, leave password blank]. If you go to the Student Upload area, you can download the Inventor files from our team's entry (0103).