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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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Hey Leevibe!
Those lobes or 'mickey mouse' ears are to aid in bed adhesion as those areas were a little prone to losing bed adhesion without them. They're so thin that you can easily pull them off after your print.
You'll definitely love this design... I sure do :D
But the other design is still good to... just this one is better!!