I needed to offset the depth of a rack mounted Yamaha Tio1608-D Stage Box in a portable case. Either could have repositioned rack mounts in case (unscrew, drill, possibly damage, re-screw unlevel) or 3D print a solution. This seemed to be the right choice.
Remix of Rack Ear mount for 8 port NetGear Switch. This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/gXdJXzlRD59