With this tutorial (my first) you can build a robot out of Bionicle pieces with controllable arm movements.

Step 1: Put on the Arms

Attach the upper arm pieces to the torso as shown. Then, put gray connectors (picture 3) into the middle hole in each arm.
cool. Now just put some legs on and a mask and you have a basic moc. <br />
I actually rigged the legs once to make them controllable along with the head. Had a lot of ugly rods sticking out of the back, though...
Hey, all it is is a prototype.

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More by Skinr:Sort of steampunk time machine Clockwork Bionicle robot 
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