About this 3D model

This thing consists of small changes to http://www.thingiverse.com/thing:49733: 1. allow 2 mm thickness, so it does not break as fast (plastic is not gold) 2. allow dual extrusion, so every other link can be another color Dual printing is tricky, a good slicer is required. I succeeded with ReplicatorG. Write a message with your setup if you succeed!