MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
I can't find my original files for this. I did upload IGES for my version 2 of this if you go here you can get those. http://www.thingiverse.com/thing:996689
The one marked "small" is the same diameter as the 611 the other one is a bit wider.