It’s Just a one-piece print.
In the download section you can find the source files (it's designed with Autodesk Inventor 2013).
There is a print-ready stl file and there is also a print-ready stl version with StencilWall.
Hi, I'm Yves, a 3d printing enthousiast. I am following the 3d scend for a couple of years now, and I think love great friendly community around it. most of my design experiences came from online learning. For a living ...