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 already printed those parts from the very begining. The filament loop prevents the filament to escape to the outside, but the problem is that actually the filament when it is pulled by the printer, it tends to escape to the inside of the spool.