Nema holder for Ultimaker quiet retraction

myminifactory

Here's how you can create a robust Ultimaker quiet retraction system that outperforms the original by Maxy: http://www.thingiverse.com/thing:53690 This upgrade is extremely useful, but its effectiveness is compromised by the weight of the NEMA 17 motor. I didn't want to print another one, so I came up with a solution. My design adds some noise, but less than the wooden backplane upgrade.