In Project Zomboid Build 42, 2 items carry the base:hammerstone tag. Recipes and actions that ask for "any hammerstone" accept any of them, so you can use whichever one you have.
| Item | Category | Weight |
|---|---|---|
| Stone | Material Weapon | 1 |
| Stone Hammer | Tool Weapon | 2 |
Recipes that accept any item with this tag:
2 items: Stone, Stone Hammer.
It is used by 19 crafting recipes, including Smash Bone, Smash Jawbone, Smash Cow Skull, Smash Herbivore Skull, Smash Stag Skull.
Figures on this page are read from the Build 42 game files (42.22, November 2026). Chances are relative weights inside each loot table, not exact drop rates. Your game is the final word: if it disagrees with us, tell us and we will fix the page.