I printed with 3 outer walls to make it stronger. It has 3 top and bottom layers for the same reason.
All other options are standard and no supports or adhesion is necessary. I hooked to a board on my concrete wall, just make sure the screws are into something solid (like a stud). There are 6 screw holes, but I only used the 4 corners.
The author remixed this model.
Using the handle supplied by milk, I made a simple parallel wall mount that holds the AMS parallel to the wall at just the right distance.