Side view of 330’s 2007 robot, showing the arm and gripper as requested by rachal in this thread: http://www.chiefdelphi.com/forums/showthread.php?t=55412
The outside of the arm is fiberglass. Hidden inside is a pneumatic cylinder that actuates the gripper. The yellow “wave” is plywood and is currently in its 4th iteration. This picture shows the first iteration of tread material on our gripper, and we’ve changed it several times since then.