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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Here's an article for you to read up on. https://www.3dhubs.com/knowledge-base/supports-3d-printing-technology-overview it explains when to use supports. Rule of thumb any horizontal overhang requires support of some kind. My personal work around is to create a slight angle, the printer then can build outwards with no drooping.