Quote:
Originally Posted by asid61
+1. 6063 has a much lower tensile strength and stiffness than 6061. If you take a hard hit to the side, 6063 bends much easier. It's cheaper, but it's not worth it; just move to 2x1.
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While your first sentence is accurate, you're not speaking from experience here. Your words are just conjecture. We've taken many HARD hits and not bent 6063 in our frames.
I'm not saying it's a good choice. Definitely go 6061 if you can... I would really prefer if my team did - but going 6063 isn't going to ruin the robot in this application. If you're dead set on 6063, it should work based on my team's experience.