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.
Here you have the pictures :) it is difficult to shot the internal part, hope this can help you. You say that is not possible to print it without supports but everyone is printing it without it. And BCN3D team also print it without it. Why you just try to print it :)?