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 the pictures, I wouldn't have been able to visualize it. Did you use a stock wheel as an idler pulley? it's supposed to be a printed pulley that uses the bearings from the wheels, but if it works... Also, if you want a little more Z travel you can use the stock metal corner braces at the top instead of the printed ones, they are plenty stable on mine. Keep us posted on your build.