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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hm, I've just checked it with blender, there are some intersect faces around the edge, but everythings manifold- at least thats what the tool tells me.
It should print fine anyway, cura will slice it even with some errors.