Based on a popular tattoo design, this is the phrase "I am starstuff" spelled out in protein diagrams, and put in the form of a linked chain that can be worn as a necklace or bracelet.
The chain should be folded up to be printed at any reasonable size... at 8 inches, the chain links will be about 1.5 mm wide. I've included both the straight version for easy modification/stack prints, as well as a folded version for large printing.
If you want to print the small version, you can easily use Blender's "Displace" tool to thicken the bonds: Just make sure you don't cause any overlap at the joints.
Also, I printed this on an industrial printer capable of printing support material. It occurs to me that a MakerBot might not be able to do that... though the newest models are capable of 2-material printing. Apologies for those who can't print this design. I'll work on one you can print without an advanced system.