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.
The stock file is 37.5 mm approximately i scaled it up by 133% and got a 50mm impeller,
Also Remember to reverse the impeller or the stator cone.
Otherwise the water will turn too abruptly ad maybe cause Cavitation thus Creating a substantial decrease in performance Cheers.