A while ago, Sparkytron uploaded a video demonstrating a new technique for armor cladding on both sides of a ball joint. Since then, further research has been made into new techniques, using a wider range of elements, such as the fire-villain engine armor, or general chest plates. The armor that could be added could be no smaller than this( www.bricklink.com/PL/90640.jpg?1 ) and no larger than this( www.bricklink.com/PL/90638.jpg?1 ). this applies to all of the above techniques!
(See notes for more!)
ORIGINAL VIDEO BY SPARKYTRON: www.flickr.com/photos/sparkytron/6789582166/in/photostream
For a custome Bone Joint, Check this pic by BS01 Cholie: www.flickr.com/photos/47496150@N05/6935881529/in/photostream
This technique needs a name, so please contribute! :D