I originally tried using this great model from @Emboli_540260. However, the shelf fell off of my wall twice when trying to mount with command strips. To prevent this, I modified a 2x6 Gridfinity baseplate from PerplexingLabs and added a french cleat style mount. The mount baseplate can be attached to the wall using (x2) #8 Screw drywall anchors. The shelf itself requires supports for the receiving end of the french cleat. I used Tree (auto), and printed this model in PETG.