Hydraulic Arm

The base. Weighted inside with a couple of iron bars. Ready to allow rotation and adjustments of the arm once it is fully installed. 

These gripping fingers will form the hand, complete with padded fingertips for better grip. 

The forearm and wrist assembly. 

The beginnings of the upper arm. You can see an example of a couple of the pins that help secure the parts in place nicely. This is some heavy-duty gauge plastic at work, too. 

The upper arm has been mounted to a platform that will interface with the base to allow for rotation.