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.
As TheHellWithIt said, the structure is just a plain cylinder divided in two parts so you kan push the bolt trough the first section. The other section locks in to the first an also has a hole in the back of it so you can put an bicycle handlebar endcap in it for better finish. Slap a bicycle grip on it for better comfort :)