Crafting is an in-game system allowing players to create specific items, such as a weapon, hat or materials for further crafting, using unwanted or duplicate items gained normally via the Item drop system. To create these items, the player must follow explicit blueprints, some of which are initially available and others of which must be discovered by the player by experimentation. After following a valid, undiscovered blueprint recipe, the player will both gain the item specified by the blueprint, and the blueprint will be added to the player's list of known blueprints. If the player attempts to craft an item without a corresponding blueprint, they will be notified that no such recipe exists, and no items will be lost.
Smelt Class Weapons Any 2 weapons wielded by the same class
Eg. Ambassador + Dead Ringer (Spy Weapons) 1 Scrap Metal
Smelt Tokens 3 Tokens
Eg. Heavy Token + Demoman Token + Melee Token 1 Reclaimed Metal
Combine Scrap Metal 3 Scrap Metal 1 Reclaimed Metal
Combine Reclaimed Metal 3 Reclaimed Metal 1 Refined Metal
Smelt Refined metal 1 Refined Metal 3 Reclaimed metal
Smelt Reclaimed metal 1 Reclaimed Metal 3 Scrap metal
† The Smelt Class Weapons blueprint was originally one Primary, Secondary, and Melee weapon of each class, but was then altered to allow any 3 (now 2) weapons from the same class, to accommodate the Engineer, Demoman, Spy, and at the time this change was made, the Sniper. This has made the blueprints marked with a dagger superfluous.