About This File
I was looking for something I could only print on a UM3 and I think I found it. I originally saw this file on Thingiverse and saw that no one had printed it, and hunted it back to it's source, here: http://www.cs.technion.ac.il/~gershon/EscherForReal/
I'm overall pretty impressed with how this came out. The totally flat overhangs came out beautiful with 100% interface on the PVA: