Forging
To forge something you make a mould out of very good steel. You put a plate of the metal you want to forge between the two halves of a mould, and squeeze the mould, typically through large presses! The moveable half of the mould is called a "tool"; the stationary half is called a "die." The metal flows like toothpaste, and when you open the mould, you have your part. A little finishing and its ready to use