Metal casting

Liquid Metals
''Metals become soft and maleable when heated in large fires. The hotter, the more maleable and soft they seem to become... So what if we improved our furnaces to heat them so much they would become temporarly as liquid as fresh water? We could litteraly pour the metal into holes with the desired shape right away instead of having to work it with manual hammering. If we can master this technique, that would allow us to mass produce items and weapons at a much higher speed and with a much more consistent quality!''

Potential Requirements

 * Smelting