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.
You are right about direction of spin but look at the picture. Maybe it better describes my idea. Depending on side of PTFE tube connection the filament can be taken from bottom or top of the spool which gets you more possibilities of spools arrangement.