Drew the concept so I'll just kick it off! Some notes: * This Blacksmith incorporates a blast furnace, which is the stone platform with the wide chimney like thing. The Han was the only culture that uses blast furnaces to make tools and weapon parts out of cast iron in this timeframe. * The mechanism on the right is a human "hamster wheel" that turns a pole which pushes down a bellow with the studs on it. The wooden counterbalanced crane pulls it back up. During the Han these where often powered by water but I went for man power for obvious reasons. * The pool in the middle is where they pour molten iron in. * At the bottom is a crate of molds. References used: