Good morning, Pigott3 again! Today I have a simple survival frendly smelting solution. Using double chests and hoppers, these furnaces will contitnue to cook, smelt, and burn until recources or space runs out. Because it uses two furnaces at the same time, smelting is more than twice as fast as a traditional furnace.  Have fun and try to recreate it in your own survival world!

Recorces:
6 Chests
6 Hoppers
2 Furnaces
Fuel
Smeltables