Our tetras have been holding up.... eh, decently. We haven't really put them through their paces completely (the robot's in pieces at the moment, so it can't do anything...
) but none of the tetras we were using have shattered beyond repair.
Also... here's a question: are the tetras y'all are using PVC? 'Cause the USF specs on the tetras say they're to be made of aluminum and I'd figure they would hold up better than the PVC has been...
__________________
And now for something completely different...
GO DRAGONS!!!
Drexel University, Class of 2010
"The definition of insanity is doing the same thing over and over and over and over again, but expecting a different result." ~ Albert Einstein
"Strength is irrelevant. Freedom is irrelevant. Self-determination is irrelevant. Death is irrelevant. You must comply." ~ the
Borg 
"Therapy is expensive. Popping bubble plastic is cheap. You choose." ~ Unknown
"We're [engineers]! We're the opposite of people!" ~ pirated from
Rosencrantz and Guildenstern are Dead!