These bangles are printed in an single run and form the Borromean ring pattern. In case you didn't know the Borromean rings (named after the family whose coat of arms bears the symbol) have the unique property that no two rings are interlocking.
Check out Vi Harts video on Borromean rings here:
https://www.youtube.com/watch?v=heKK95DAKms

UPDATE
We uploaded a new file that prints easier and is more uniform.

1. Print these at default settings with supports and raft
2. Remove support and put around your wrist
3. Walk around feeling super smart and fashionable