Does anyone have a link to a 30mm extruded aluminum file? I have searched google and all other websites I could think of, and found nothing.
There are many companies that sell extrusion.
Which one are you looking for?
Try http://www.firstcadlibrary.com/ there are several different styles to choose in various cad software
http://www.firstcadlibrary.com/pages/extrusion.asp is pretty easy to find with google, if you search for
30mm extrusion cad model
Are you looking for the extruded aluminum from the chassis? If so, it is posted in the Autodesk KOP on the Community website.
Also, FRC Designs (http://www.frc-designs.com/) has a few robot models with an extruded aluminum chassis. I hope this helps!
Also www.cbliss.com is a very good source