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Originally Posted by Billfred
I saw them in Atlanta, and they felt pretty solid to me (at least for prototypes). I've seen a lot of things made from 1/8" aluminum, and it seems to hold up to plenty of abuse, especially once you start putting some bends in there.
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When 190 made our mecanum wheel, we originally had our rollers supported by 1/8" aluminum tabs, but we found that lose quickly bent when supporting a 130 pound robot making rapid movements. We switched to 1/8" steel, and while those were much better, we still had the occasional bent tab.