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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This is a fun and simple design! I really like it :)

You mention getting the filaments for pens to use. I've thought about this before but wondered if this works okay. Have you tried filament meant for pens in your printer?