About this 3D model
The included file is marginally larger in all dimensions than the one pictured, a minor improvement based on the usability of my test print. Prints with the wall side flat to the plate. It should work for most double-action airbrushes. Though depending on your mounting position, you may need to remove the reservoir for it to work correctly. Mounts with two screws. The size of screw shouldn't be relevant as long as you are using relatively typical chamfered DIY screws in the 3x30 to 6x100 mm range. Could also be mounted with command strips to a non-damageable wall or table leg.