Summary

My robot tank tracks with a traction upgrade!

Instructions

The trouble with printed tracks are that they are made of a hard plastic that can be quite slippery on hardwood or tile floors. My solution was to use cheap drawer liner.

Parts:

some drawer liner (often bought in rolls)
Super Glue!
http://www.thingiverse.com/thing:52552

Instructions:
There are two ways to apply this upgrade. Either glue individual rectangles of the liner to each track as i did, or glue on one big long strip. Using one long strip will increase the durability, however i liked the look of the individual rectangles better :).

Robot Tank Track - Traction Upgrade