Copper Crucibles Ready To Ship

Copper was the earliest metal used because it was easier to obtain. People used firewood (and later began to use some charcoal) to burn copper ore to extract copper, which also required a furnace. Dig a pit in the ground and start smelting copper.

Later, they started to make some hollow soil balls with soil. After they were air-dried, they put copper ore powder into the fire and burned them in the fire. Finally, the molten copper water was poured out. This was also the earliest copper crucible.