MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
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Yes, I am aware. If you have your setting correct in Cura or S3D, they will print fine with no separation. But, in any case this cooling duct will likely be retired and replaced (very soon) with a single duct version if you really want to reuse the 4010 fan. I only made the dual duct for the 4010 because so many people asked for it (later many would write back complaining about the performance). The 4010 fan does not output enough air to properly drive two ducts. I recommend using 5015 radial fans.