Omg, thank you. I keep smelting everything...
Speaking of which, I think the only thing standing in the way of the game having a perfect closed-loop resource system is to do something with the unused bars and gems; I literally have hundreds of each... not sure what to do with them, haha. Maybe some super expensive Dojo upgrades or some kind of trade system?
Edit: oh, just realized you can sell ore, but not bars. That brings it even closer!