Raspberry Pi Case Mount for FolgerTech FT-5

I use my Raspberry Pi 3 to control my 3D printers but I also wanted it portable so I could take it with me without being tethered to a power cord. That led me to follow this path > http://www.thingiverse.com/thing:1503651 which is a battery powered option with a 7" Raspi screen. After I built the FolgerTech FT-5, I couldn't find an easy way to mount the heavy case and the attached camera since the build surface is very high.
This led me to the simple bracket that slides over the electronics c