Anvil, and it is vital to level the Smithing skill. Hammers can be bought from most general stores and will never break. A hammer is also used in the Construction skill when making furniture.
A hammer spawns in the following locations:
- Blast Furnace, in the north-east corner on a table.
- Upstairs in the Falador furnace room.
- Searching crates at Motherlode Mine.
- In a supply crate at the Wintertodt.
- In the basement under the Slayer Tower