The Amulet
Forging was a process that required immense amounts of concentration. It was akin to a science as the timing and the location of their hammer strikes, the hotness of the flame and various other things all had to be taken into account by an experienced crafter. It was even harder when they had to be working with new materials they didn't have any prior experience with. In the end, a lot of it came to the forger's intuition and skill.
The forging room was almost devoid of people, except for two. Andrew, the person who had crafted Oscar's personal weapon, making him the only known crafter to have ever created a Demon tier weapon, and the Cursed faction's master forger, Alex.