Smelting furnace

A smelting furnace, sometimes referred to as a smelter, is a machine used for creating metals from their ores. A primitive smelting furnace can also be used to create iron and bronze, but a smelting furnace is required in order to create aluminium or steel. While smelting furnace takes more resources and time to build than it's primative counterpart, and cannot be built outside, it processes the resources more efficiently; you need less ingredients to create any amount of a metal using it.

Requirements

Resources Required

• 3000 grams of stone
• 200 grams of iron

Labour Required

• 5 days

Tools Required

• trowel

A smelting furnace can only be built inside a building.

Projects

Maximum workers: 5

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Manufacturing steel (coal)

Output per day of labour

• 700 grams of steel

Maximum output

• 56000 grams

Required resources

• 420 grams of iron
• 420 grams of coal
• 1400 grams of limestone

Required tools

• pair of bellows

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Manufacturing aluminum (coal)

Output per day of labour

• 700 grams of aluminum

Maximum output

• 8000 grams

Required resources

• 1400 grams of alumina
• 700 grams of coal

Required tools

• none

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Manufacturing aluminium (charcoal)

Output per day of labour

• 700 grams of aluminum

Maximum output

• 8000 grams

Required resources

• 1400 grams of alumina
• 1330 grams of charcoal

Required tools

• none

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Refining iron ore (coal)

Output per day of labour

• 350 grams of iron

Maximum output

• 28000 grams

Required resources

• 700 grams of iron ore
• 420 grams of coal
• 1400 grams of limestone

Required tools

• none

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Refining iron ore (charcoal)

Output per day of labour

• 350 grams of iron

Maximum output

• 28000 grams

Required resources

• 700 grams of iron ore
• 700 grams of coal
• 1400 grams of limestone

Required tools

• none

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Manufacturing aluminum (gas)

Output per day of labour

• 875 grams of aluminum

Maximum output

• 10000 grams

Required resources

• 1400 grams of alumina
• 245 grams of propane

Required tools

• none

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Refining iron ore (gas)

Output per day of labour

• 525 grams of iron

Maximum output

• 42000 grams

Required resources

• 700 grams of iron ore
• 140 grams of propane
• 1400 grams of limestone

Required tools

• none

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Manufacturing steel (gas)

Output per day of labour

• 770 grams of steel

Maximum output

• 61600 grams

Required resources

• 420 grams of iron
• 140 grams of propane
• 1400 grams of limestone

Required tools

• none

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Smelting bronze (wood)

Output per day of labour

• 500 grams of bronze

Maximum output

• 40000 grams

Required resources

• 1000 grams of copper
• 100 grams of tin
• 50 grams of phosphorus
• 50 grams of zinc
• 200 grams of wood

Required tools

• none