Finery forge

Working with cast iron
''Iron is a capricious metal hard to work with. If you heat it just enough to soften, with a lot of manual forging you can work it into a maleable but flexible soft metal. However if you melt it completely to the point of casting it, it becomes very hard but brittle and impossible to work with! Blast furnaces are very efficient and fast but they are so efficient they only produce this cast iron we do not know how to work with properly... Heating and hammering it for a long time allows to slowly remove the carbon, eventually producing pure 'rough iron'. Using our knowledges of mechanics, we could try to create special forges making this operation much more faster and efficient, allowing us to streamline iron production out of cast iron ingots we can already mass produce with bast furnaces''

Potential Requirements
Blast furnace