Basic Steps:
I also scanned my old footbed to make sure I was pretty close to what I already had.
Grid infill, 15-30% stiffness depending on how much flex you want in the footbed. Grid infill gets you the best bang for the buck because all the force comes from the top, so you really only need strength in that direction.
I've tested it on snow now for 4 days and it feels pretty good, you don't notice the layer lines or slight roughness at all when skiing.
The author marked this model as their own original creation.