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.
If you need supports for this print, just use a solid wall.
That way it is more stable, you don't have any waste material, and print failures are much less common.
I think overall far more material was wasted already because of failures, than was saved by the holes in the wall