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.

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It's printable without the need for supports inside the combustion lining. Only need supports for the thin overhanging flange. I designed the parts such that any angled surfaces are doable without supports, and only the horizontal overhangs actually need supports.