* Can be bought at the [[Blacksmith]] for {{price|150}} each in year 1 and for {{price|250}} each in year 2+
* Can be found at any Floor of the [[Skull Cavern]]
* Can be dropped by [[Metal Head]]s in Floors 80-119 of [[The Mines]], by [[Stone Golem]]s, or by [[Dust Sprite]]s, or by [[Slimes|Iron Slimes]].
* Can be found in [[Fishing#Treasure Chests|Fishing Treasure Chests]]
* Can be found by [[Hoes|tilling]] soil in [[The Mines]]