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.
Filar3D based off your comments alone if i was the author i wouldn't give the files out. You seem to have an entitlement issue. If it is not NASA and "just a fan shroud". Maybe you should just redesign it yourself ;) then you can do what ever you want with the file.