Molten copper
1 Reduced 99.9% copper + 3 Borax + 60 Oxygen → 60 Molten copper
Compatible machines Basic oxygen furnace MK 01 · Basic oxygen furnace MK 02 · Basic oxygen furnace MK 03 · Basic oxygen furnace MK 04.
Research tier Production science pack. Copper processing - Stage 4
4 base seconds per batch. Fractional outputs are average yields.