He set up the ritual and started. For armour, Jon had chosen cushioning, indestructibility, and featherlight enchantments after careful deliberation. He simply imbued all the enchantments into a big furnace full of molten alloy and kept it hot with help of Winter. Jon focused on slowly forming the required components, letting them cool in the air and solidify. He hadn't bothered calculating the precise amount of metal required and just went with a big lump, and after all the components were done, there was still a sizable amount of enchanted molten bronze to go around.