the.com/metalworking
Convincing stubborn rock to become forks, swords, and skyscrapers.
means The craft of shaping metal by cutting, forging, casting, joining, or otherwise bending it to human will.
from As old as fire-tamers: the Bronze Age literally named itself after humans first smelting copper and tin into something useful around 3300 BCE.
Heat trickAnnealing softens metal; quenching hardens it, same fire.
Cold sideHammering metal cold actually makes it stronger.
Original alchemySmelting separates pure metal from its rocky ore.