Raspberry Pi 3 Case and Hanger for Custom Heavy Duty Shelves

I have some of those custom heavy duty shelves you can buy at most hardware stores in the workshop/storage room where my printer sits. I wanted to try setting up Octoprint on a Raspberry Pi 3 B and hanging it on the end of the shelf helps keep it out of the way. So this includes a hanger that is a separate piece that goes on the shelf first and could be used for other purposes aside from hanging a case, I suppose.

My initial design attempt was to build a case that printed as a piece. I intend