Hammer · Monster Hunter World: Iceborne
Grandrock I
A hammer made of modified bone. The primal force of each swing could split a boulder in two.
Stats
- Attack
- 884
- Affinity
- 0%
- Rarity
- 6
- Slots
- 2
- Element
- Thunder 390 (hidden)
- Defense
- +10
- Sharpness
- Red 110 · Orange 100 · Yellow 40 · Green 40 · Blue 60
Upgrade path
Crafting materials
Total cost of Grandrock I: it comes from a 7-step upgrade chain, and crafting the final weapon means going through all of them. The total below sums the whole tree.
Materials total
Each material appears once, under its main source: monster, then gathering, then combining.
Dropped by monsters (9)
- Quality Bone ×12Radobaan (carve), Kestodon (reward), Girros (reward) · also: gathering
- Monster Keenbone ×8Paolumu (reward), Barroth (reward), Raphinos (reward) +8
- Monster Bone M ×7Barroth (reward), Tobi-Kadachi (reward), Jyuratodus (reward) +1
- Monster Bone+ ×4Great Jagras (reward), Kulu-Ya-Ku (reward), Tzitzi-Ya-Ku (reward) +5
- Sturdy Bone ×4Radobaan (carve), Kestodon (reward), Mernos (reward) +5 · also: gathering
- Monster Hardbone ×4Black Diablos (reward), Diablos (reward), Odogaron (reward) +8
- Monster Bone S ×3Jyuratodus (reward), Kestodon (reward), Mernos (reward) +6 · also: gathering
- Monster Bone L ×2Paolumu (reward), Tzitzi-Ya-Ku (reward), Anjanath (reward) +3
- Ancient Bone ×1Kestodon (reward)
Gathered in the field (1)
- Boulder Bone ×2Wildspire Waste
Materials per step
1.Bone Bludgeon I (craft)
2.Bone Bludgeon II (upgrade)
3.Bone Bludgeon III (upgrade)
Monster Bone M ×2, Ancient Bone ×1
4.Fossil Bludgeon I (upgrade)
Monster Bone L ×1, Monster Bone M ×5, Boulder Bone ×2
5.Fossil Bludgeon II (upgrade)
Monster Bone+ ×2, Monster Bone L ×1, Sturdy Bone ×4
6.Fossil Bludgeon III (upgrade)
Monster Keenbone ×2, Monster Bone+ ×2, Quality Bone ×2
7.Grandrock I (upgrade)
Monster Hardbone ×4, Monster Keenbone ×6, Quality Bone ×10