Tinkers' Construct 2 Wiki


Empty Grid.png
Grid Obsidian.png
Type Material & Modifier
Mod Vanilla
Description Tough as nails, but fragile when shaped.
Stackable Yes (64)
ID Name minecraft:obsidian
Smeltery? No
Handle Modifier 0.8x
Mining Level Grid Cobalt Ore.png Cobalt
Mining Speed 7.0
Durability See durability
Full Tool Durability See durability
Base Attack 1
Material Trait(s) Duritae
No. Uses Multi-Use
Modifier Type Tools
Effect(s) ⦁ Enemies drop their heads
⦁ Adding more Obsidian and Ender Pearls increases the chance of decapitation
⦁ Multiple levels
⦁ Cleavers come with beheading II
Modifier Trait Beheading

Obsidian is a naturally occurring material and can be used to create Obsidian Tools.

Obsidian is one of the material that can mine Cobalt Ore and Ardite Ore.


Molten Obsidian



650 °C

Molten Obsidian:

Alloy Smeltery

Molten Lava: 7 Ingots and 7 Nuggets
Molten Water: 7 Ingots and 7 Nuggets
Molten Obsidian: 2 Ingots and 2 Nuggets
Note: Lava and Water can be placed in the smeltery by right-clicking on a smeltery drain with the appropriate bucket, or by using buildcraft-compatible pipes


Casting Basin

Tinkers' Construct Liquid Casting GUI.png
Molten Obsidian: 1 Blocks
Texture Casting Basin.png
Molten Obsidian: 1 Blocks
7 s



Obsidian has one of the lowest durabilities of any material. It also has the Reinforced III trait, which gives a 30% chance of not using durability. Combined with Diamond and Emerald, it is one of the best pickaxe heads. It can be used for Tool Rods, but is one of the very worst bow materials.

Obsidian, combined with an Ender Pearl will add Beheading trait to Tools.

Tinkers' Construct Tool Forge GUI.png
Empty Grid.png
Grid Ender Pearl.png
Empty Grid.png
Grid Obsidian.png
Empty Grid.png
Grid Prismarine Cleaver.png
Prismarine Cleaver Beheading


  • It is more efficient to put obsidian in the smeltery since its ingot value is doubled.
  • Despite being the hardest block available in Vanilla survival, Obsidian does not make good tools.