A kratonite bar can be smithed on an anvil through the Smithing skill to create Kratonite equipment, granting between 37 and 41.5 Smithing experience per bar used. A list of kratonite items that can be smithed from kratonite bars and the Smithing levels required can be found here. Five kratonite bars are used along with 5 utuku branches to build a cooking range in the hotspot located in the start room of a dungeon.