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.
This is a 30 degree bend 30mm to 40mm adapter I printed. I just commented out parts of the OpenSCAD to generate a top and bottom half that I could glue together.
This avoided awkward overhangs and any supports.