Slightly changed but greatly improved version of Shape Lock Chain I
http://youtu.be/yalD33QPM94

I've cut away a tiny bit of the very last locking element such that the chain can be locked end to end to a loop. This is the single point friction lock for the whole chain.

For the shown bracelet you'll need:

• 16 main links
• 16 locker parts
• 16 axles
  For the axles you can use 3mm diameter printing filament cut to the right length. PLA plastic can be scratched with a knife and broken.
  You could also use brass, wood, bamboo, steel, carbon-fiber or some other material for your axles.