Oh, no, it’s getting more and more difficult now… Now you even need aluminum to get niobium and tantalum, which means you need to enter LV, and then you need to use a cup to scoop out the molten sodium and molten aluminum in the crucible without a smelter. It’s too bad. It’s not as good as melting tantalite at the earliest time
I regret the suggestions I made at that time…