Robot Mechanic Arm - style three 3D model

The robot arm is an unique mesh and unwrapped:

the fingers are overlapped to save uv space, so the arm. I show the overlap in the pictures.

The preview image is rendered in mental-ray and occlusion.

Number of tris: 6,382

Number of joints: 33

Features:
- roll control
- twist control
- global scale control
- grab/fist control
- free rotate control of each joint's finger
- show/hide finger controls