Thanks for the compliments guys! We really appreciate it. The parts are for a type of mechanism that we like to call a 'carwash'. Very similar to our 2012 robot, they will deploy over the bumper and spin some fabric material to draw a ball over the bumper and into the robot:
http://www.youtube.com/watch?v=9wyh1ojKQLo
Made some more parts last night, and learned a pretty good lesson after screwing up: cut rates listed 'in the book' don't always translate to real life. It was our first attempt at cutting 0.050in aluminum, book said to cut at 325IPM. That didn't turn out so well, so we cut it again at 100ipm. Both cuts used 45A fine-cut consumables running at 40-45A. These are the results:
This is for the belly-pan of our chassis.