Bellows

In the tree

Metallurgy tech tree

Column 7

• Metallurgy tech tree Column 7

Research cost

Red points

30

What it unlocks

Lens

Furnace I

• Lens Furnace I

Alchemy Flasks II

Furnace I

• Alchemy Flasks II Furnace I

Bellows

Building

• Bellows Building

Research first

Iron Forge

35 red tech points

• Iron Forge 35 red tech points

Bellows

• All technologies

In the tree

• Metallurgy tech tree Column 7

What it unlocks

• Lens Furnace I
• Alchemy Flasks II Furnace I
• Bellows Building

Research first

• Iron Forge 35 red tech points