[fargus111111111]

We 3D print quite a few components, mostly spacers and battery trays. In 2016 we tried printing the pulleys for our track drive and we did shatter several of them after lots of use, but we did not fill them fully and we were not nice to them. (repeated full speed over the rock wall did them no favors) We love to print with bright orange plastic so we can easily show it off. Our printed rollers on the sliding part of our 2015 arm, which supported the weight of a full stack held out past the frame of the robot, have never had any problems. That being said, I think that 3D printed parts are better used for more constant stress situations rather than high shock situations.