Good topic gmay3, and good question, Roxy. I have a few things to print tonight, so I'll take some pictures and maybe video of the problem.

So far, there's been no fraying or damage to the Y belt, but there is a noticeable U-shaped scuff on the left wooden laser cut arm of the Y idler. I print at least four 60-90 minute jobs a week, and I built the i3v in early April 2014, so that should give you a gauge of my usage.