Couldn’t you 3D print the parts using this method? Honestly I’m pretty unknowledgeable on this topic, but it might be risky to distribute the files yourself but I’m pretty sure you’re safe to share your method of getting the files in blender/whatever other program being used, in that way, people using it are completely responsible for how they use it. If the protector mask is made by you I’m pretty sure you can distribute it for free.
I’d strongly advise against printing any official lego part.
Yeah, I wasn’t saying I would do so, I was just curious of it.