[sgreco]

My team used 1 inch by 1 inch 80-20 last year. It worked very well and we had almost no problems with it. If you have a square frame make sure you put in supprts to keep it twisting, If you take a hit, some of the fasteners aren't strong enough to prevent it from twisting a little. I still think 80-20 is wonderful and my team loves it. We made a frame for a six wheel skid in the off-season with 168 inches of 80-20. It's always good to have some extra. We used a little less than 350 inches on our robots frame in the '08 season, but it was a swerve drive and required a little more aluminum extrusion.