Unstable Tools
by Tfarcenim
Unstable Tools adds a tool tier whose items cannot break, forged from a new Unstable Ingot that carries a risk of exploding.
What it does
Tools, armor and weapons of the new tier are built from Unstable Ingots, which are made by combining iron ingots with a division sign and a diamond. The tier sits near netherite in strength, but its durability never runs out. The division sign can be obtained by defeating the Wither, and a sacrifice at an enchanting table at midnight activates it. Unstable Ingots are not safe to keep: if a player closes an inventory screen while holding them, they explode after ten seconds.
The mod is a fit for survival play, where it adds an unbreakable equipment path with a distinct cost. Fabric API is required on Fabric, and the mod runs on client and server, so every player on a server needs it. Files are published for Fabric and NeoForge, both for 1.21.1, and the source code is public under the MIT License, which makes the project open source.
Key features
Unbreakable tools
Tools in the new tier do not lose durability, so they never break in use.
Netherite-like tier
The armor and tools sit near netherite in strength while keeping the unbreakable property.
Unstable Ingot crafting
Unstable Ingots are crafted from iron ingots and a division sign with a diamond, and they are the base material for the tier.
Division sign from the Wither
The division sign drops from the Wither and is activated through a midnight sacrifice at an enchanting table.
Explosion timer
Unstable Ingots explode ten seconds after an inventory screen is closed while they are held, which is the mod's main risk.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Late-game survival
Players who reach the Wither can build an unbreakable toolset without a long netherite trip.
Who it’s for: Players who want unbreakable equipment and accept the explosion risk of Unstable Ingots. Server owners running Fabric or NeoForge can add it for a shared progression path.
How it compares
Water Tools, Air Tools and Lava Tools are all NeoForge mods that run on client and server and are published under All rights reserved, not open source. Water Tools covers 1.21.1 – 1.21.4, while Unstable Tools targets 1.21.1 only. Division Sigil is a NeoForge mod for 1.21.1 that shares the division sign theme and is also All rights reserved.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Unstable Tools | Fabric and NeoForge | 1.21.1 | Client and server | 2025-09-13 |
| Water Tools | NeoForge | 1.21.1 – 1.21.4 | Client and server | 2025-09-25 |
| Air Tools | NeoForge | 1.21.1 – 1.21.4 | Client and server | 2025-09-27 |
| Lava Tools | NeoForge | 1.21.1 – 1.21.4 | Client and server | 2025-09-26 |
| Division Sigil | NeoForge | 1.21.1 | Client and server | 2026-02-20 |
Questions
Does Unstable Tools need Fabric API?
Which loader should be chosen for Unstable Tools?
Does the server need Unstable Tools installed?
In the catalog
Unstable Tools is one of 17,631 Equipment mods on ModsFinder, and one of 8,894 Equipment mods for Fabric. 32,366 mods support Minecraft 1.21.1.
More from Tfarcenim
Similar mods
What the author says
This mod adds a new tier of tools and armor similar to netherite except they have no durability and cannot be broken by any means. They are crafted with a new type of ingot, the Unstable Ingot. These ingots are crafted with an iron ingot, a division sign, and a diamond.
Official listing
- Modrinth page
- modrinth.com/mod/unstable-tools
- Owner
- Tfarcenim
- Published
- 2024-12-29
- Updated on Modrinth
- 2025-09-13
- Facts verified
- 2026-10-15