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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As far as fitting the bearings in, its kinda funny but i lay a bearing on a hard flat surface and put the printed frame on top and ..... ready? is Step on the frame making my weight push the bearing in .. i know it sounds crazy but it always worked for me :)