One of those geometric snake things. I believe some people know it as Rubik's Twist.

Properties:

• Fully Printable in one go.
• Functional hinges.
• Clicks into 90 degree angles.
• Rounded corners to have it go more smoothly.

Took me 3 hours to print on the Makerbot Replicator.

I've added the files for a 2 colour version using dual extrusion (named Black and White).

This thing was made with Tinkercad. Edit it online https://tinkercad.com/things/9snwCIbBetx

Just print.

When you're done, you should be able to move the hinges.

If you're using dual extrusion for two colours use the "Black" and "White" files to merge them.