The original file had a cavity in the middle of the ring; which when printed left a very thin wall at the base of dragon chin. This wall can easily break. I reworked the ring to be one solid object and removed excess material where it wont be seen, on the inside of the ring. Sadly I had to remesh it inside of blender which lost some small details; though I don't think it will be very noticeable due the the prints size. I also use the version with the nose horn. Here is a version of the original artists file that doesn't have the cavity: https://www.printables.com/model/289424-dragon-ring The Ringfiswithoutbase.3mf file is the one without the cavity.