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.
simply assemble it with the short pin for the larger gear and the long pin for the small gear and arrow. it is just a couple gears that drive the always right arrow. a hand toy is all. The arrow has the illusion of always pointing right