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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Thanks for trying it out!
The addition of bearings would definitely be necessary if used for any length of time. I designed it solely as a demonstration model, thus the hand crank ;)
Would love to see it redesigned and used in an application.