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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I had the same question, but found a solution. I went to a local hardware store and picked-up some aluminum tubing, the kind used for hobby work. Made by Previcsion Matels, Stock #105, Rd Alum Tube, size: 7/32 x .014 (5.56mmx.355mm). Cut them down to length. Good luck! -jason