What materials do you most commonly use on your robots?

[BurkeHalderman]

Originally Posted by Oblarg

This does not offset the fact that by far the single largest source of mechanical failures I have witnessed on our robots, both directly and indirectly, has been 80/20 construction. I have not seen those same mistakes made with tube/gusset construction, simply because the modes of failure I've seen most often are simply not possible with tube/gusset construction.

Can you describe these mechanical failures that were caused by using 80/20?

Originally Posted by MichaelBick

How is it possible to make more mistakes with 8020 if you build in a very similar way, however without gussets?

I'd assume it'd be due to parts shifting in the T-slot profile. However if you simply drill through the 80/20 after positioning it using the T-slot then the problem is resolved.