pic: Team 610 Off-Season Tank Drive Prototype

[Andy Y.]

Originally Posted by M. Krass

I don't know if it's worth the hassle of dealing with ordering from the US, but onlinemetals.com has 3"x3"x.125" tube.

http://onlinemetals.com/merchant.cfm...owunits=inches

1/4" wall is an enormous weight penalty and very likely much too beefy for nearly anything you'll throw at it.

Thank you for the site reference. We chose to use 1/4 in thick 3 in square for several reasons. Firstly, yes it is stronger. Secondly, we wanted the extra weight for our prototype since we won't have the weight of a robot on top of it. And finally, I forgot to add the wall thickness on my parts list XD so we got 1/4 instead.

Andy