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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When using dual 5015 fans, you can absolutely run the speeds as low as 15% My uses range in the 20%-50% power. This is the point of the dual fan setups, to get enough air through the ducts and still be silent! I will use as much as 50% power (per fan) when doing long bridges. Many times I have done 150mm bridges or more with no sagging! The filament is cooled immediately so that you can get perfect overhangs and bridges.