I got tired of looking at my Azteeg X3 sitting on the desk next to my printer so I took sgraber's mounting plate, nischi's rail clips and melded them together to create a mount. The mount fits around the rails on my MendelMax and has nischi's clips built in to keep it attached to the rails. I also added some cutouts on the sides to run my wiring through to the X3. Overall I think it came out great and looks really good mounted up to the side of my printer.
I'm uploading the blank design, but the top of the mount has some room for a little personal customization as you can see from my pictures.
I printed at .25 mm layer height with Slic3r with support on the sides.
Attach Azteeg X3.
Run wires through the slots.
Attach to MendelMax rails.