Has anyone ever used square pvc tubing for their robot frame or parts on their robot? My dad suggested it and it sounded like a really good idea but before I start to attempt to convince my team I wanted to see if anyone had experience with using it before. Here's a link to it at McMaster-Carr, I was thinking about suggesting the 3/4" square with .137" wall thickness.
http://www.mcmaster.com/nav/enter.asp?pagenum=3359