[bardd]

Originally Posted by SuperNerd256

This part: http://www.andymark.com/product-p/am-1055.htm

We use these all the time. They're really robust, in 2011 6 of them held the weight of our entire max-weighted robot for nearly a year and never complained, but they do bend. I'm pretty sure we don't have a single one of these that is completely straight.
Don't be too alarmed though, most of these bends are unnoticable to the untrained eye (maybe a degree or two).