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MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
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Yes, they are MGN12. I'm sorry, I confuse the size with my Zaribo rails that are 15x15. And yes I have cutted the rails with a radial saw, there are some tolerance with the length. I have to study the flex. By the other hand, on facebook Grégorie Saunier says it is better not to use extrusions.