Sharpen Bone is a carving crafting recipe in Project Zomboid Build 42. It makes Sharp Bone Fragment x1. It needs Carving level 1.
| Qty | Item | How it is used |
|---|---|---|
| 1 | any whetstone or any file | Tool, kept (may wear) |
| 1 | any saw or any smallsaw or any crudesaw or any sharpknife | Tool, kept (may wear) |
| 1 | Large Bone Bead or Bone War Hatchet Head or Long Sharp Bone or Bone Pieces | Used up |
| Qty | Makes |
|---|---|
| 1 | Sharp Bone Fragment |
Recipes that make the ingredients:
What you can make next with the result:
Use the Sharpen Bone recipe (Carving category). You need Large Bone Bead or Bone War Hatchet Head or Long Sharp Bone or Bone Pieces and these tools: any whetstone or any file, any saw or any smallsaw or any crudesaw or any sharpknife.
It needs Carving level 1.
You must learn this recipe before it shows in the crafting menu. It is learned automatically at Carving 2. Reading Magazine: Tool Use of Early Man, Magazine: The First Weapons teaches it. You can also research it from Bone Fleshing Tool, Tree Branch with Bone Spikes, Cudgel with Bone Spikes, Spear with Bone Head, Spear with Long Bone Head, Long Sharp Bone.
It gives 10 XP in Carving per craft.
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.