To be honest, if you had access to the equipment that would be a lot more practical way to make this. Get a piece of square bar stock of your chosen metal, cut it into cubes, and then engrave and polish. That said, most people don’t have that kind of stuff just lying around. Maybe if you’ve got access to a makerspace or a shop thru work or some really, really good friends.

I guess that’s praise for how far 3d printing has come nowadays!