Primitive smelting furnace

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A primitive smelting furnace is used to make iron or bronze. It is the only way to make iron without tools, iron or a building, but is not as fast or efficient as the smelting furnace for that purpose.

Requirements

Resources Required

• 6000 grams of stone

Labour Required

• 10 days

Tools Required

• None

A primitive smelting furnace can be built anywhere.

Projects

Maximum workers: unknown

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Refining iron ore (coal)

Output per day of labour

• 350 grams of iron

Maximum output

• 28000 grams

Required resources

• 840 grams of iron ore
• 560 grams of coal
• 1750 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

• 840 grams of iron ore
• 840 grams of charcoal
• 1750 grams of limestone

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

• 840 grams of iron ore
• 175 grams of propane
• 1750 grams of limestone

Required tools

• None

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Smelting bronze (wood)

Output per day of labour

• 250 grams of bronze

Maximum output

• 20000 grams

Required resources

• 500 grams of copper
• 50 grams of tin
• 25 grams of phosphorus
• 25 grams of zinc
• 200 grams of wood

Required tools

• None