This box was designed with the same concept as @OtherDogDesign's frame (found here https://www.printables.com/model/518556-parametric-frame-for-hueforge-filament-paintings/files) but adding the storage box that also scales parametrically. To change the box size in f360, download the original file and alter the parameters in the .f36 file. Setting the Image with and image height to exactly what your HueForge print is, should give the perfect spacing for the floating affect. Print 3 or 4 of the alignment jigs for easy image alignment.