[MrForbes]

We've been using a lot of rivets this year, and designing the robot to be able to use them in many places. The ball manipulator stuff is mostly thinwall aluminum tubing held together with sheet aluminum brackets riveted on, the chassis is fiberglass channel and sheet aluminum riveted together. The framework that hold the ball manipulator stuff is aluminum angle, which we are bolting together, but we might replace some of the bolts with rivets. We are again using a modular design, so there are 4 easy to reach bolts holding the ball manipulating assembly to the chassis, for quick full access to the drivetrain/electronics for repair.