The original design (the Ball and Squiggle) was made with a foundation of memory wire (which added to the bounce). This new engineering design is made over simple buna cord, and hangs like a standard necklace. I am currently trying to incorporate the magnets and memory wire, but so far the "road testing" hasn't been so successful. But stay tuned... I am getting closer to a solution.
For some time I have been looking for better inner armature for my bangles. At a retreat last year, a couple of friends suggested an epoxy clay-like material that air dried rock hard... Which is pretty cool. The best part, however, was that this stuff can be covered with polymer clay and baked! While this stuff has a three hour work time, it can have a mind of it's own, and is VERY sticky. So it's been taking some time to feel comfortable with it... but here is a sampling of what I've been doing so far.