This is my first instructable, I am 12. Over spring break, I built a hydraulically powered arcade claw. This is my first attempt so I made some errors and mistakes. This project allows creativity and freedom for the builder. My directions are specific, but different designs can be used; a different number of joints can be used to fit a bigger or smaller box, etc. I highly recommend arcade claw #2 for its design and weight. Also, on arm #2, the pictures can get confusing because I used only 2 joints instead of the 3 joints that the instructions tell you to make. Before you start building, scroll through my pictures of different joints, arm, and claw designs.
Ps, Please vote for me in the robot challenge. Heres the link http://www.instructables.com/contest/robot2012/?show=ENTRIES
Warning: Some of the materials and tools are capable of hurting the operator, so please be careful. Any injuries resulting from this project cannot be blamed on me.