Out of curiosity, because I have never tried it on a team, but how thick generally are the plates used on robots like 1902 and 1369's 07's, where metal plating and spacers are used over the traditional aluminum extrusion or tubing.
My guess was 1/8" or 3/16".
http://www.chiefdelphi.com/media/photos/26796
This is plating right? Or is this just another form of Monocoque frame design?