Non-Premium users cannot craft Rare or Special items, and tools cannot be crafted under any circumstances. After following a valid blueprint recipe, the player gains the item specified by the blueprint. In order to create items, the player must follow the blueprints, all of which are initially available to players with a Premium Team Fortress 2 account. Crafting is usually conducted by utilizing unwanted or duplicate items gained through the item drop system.
Items that can be created include weapons, cosmetic items, and materials that can be used in further craftings, such as Scrap Metal or Class Tokens.
Crafting was introduced with the WAR! Update in the DecemPatch. Crafting is an in-game system that allows players to create any specific items for use in Team Fortress 2.