CurseForge · Minecraft mod
Instamine
A mod made to deal with harder blocks a lot easier, like deepslate.
Quick answer
Which Instamine release should I use?
Instamine 1.2.12 for 26.3 targets 26.3 with Fabric. The project page does not say whether this file belongs on the client, dedicated server, or both. All 2 required mods have matching files.
Where it goes
Is Instamine required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Instamine 1.2.12 for 26.3 need?
Instamine 1.2.12 for 26.3. Change the file and its required mods may change too.
Install Cloth Config API (Fabric/Forge/NeoForge), Cloth Config API first. We found matching files for this game-version and loader setup. 3 come through another mod in the chain.
3 extra mods were pulled in by other dependencies. Indented rows show who needs each one. We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Instamine without breaking your instance.
Built for Instamine 1.2.12 for 26.3. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use Instamine 1.2.12 for 26.3. It targets 26.3 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Cloth Config API (Fabric/Forge/NeoForge), Cloth Config API first. We found matching files for this game-version and loader setup. 3 come through another mod in the chain.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside Instamine 1.2.12 for 26.3. It opens that exact file at the source.
About this project
What does Instamine add?
Mining deepslate has always felt inconsistent. Same tools, same enchants, slower mining speed for no meaningful gameplay reason.
Instamine fixes that by reducing the hardness of selected blocks to match the hardness of regular stone. This means with Efficiency V & Haste II, affected blocks become practically instamineable, just like stone.

How It Works
Instamine doesn't edit the blocks themselves. It hooks into the game's mining progress calculation. For a selected block, the formula is the same as vanilla's, except it divides by the configured hardness instead of the block's own.
Tool speed, enchantments and effects like Efficiency and Haste still apply as usual. The right tool is still needed for drops, and mining with the wrong tool is still slower. Only mining speed changes. Blast resistance and drops are untouched.
Configuration
The mod configuration includes the block list, the ore and log toggles, the hardness value and the master switch. All of it can be edited through Mod Menu, or directly in config/instamine.json after its generation.
Defaults
| Block | Vanilla hardness | Instamine hardness |
|---|---|---|
| Deepslate | 3.0 | 1.5 |
| End stone | 3.0 | 1.5 |
| Cobblestone | 2.0 | 1.5 |
| Cobbled deepslate | 3.5 | 1.5 |
| Ores | 3.0 - 4.5 | 1.5 |
| Logs, wood & planks | 2.0 | 2.0 (by default) |
1.5 is the vanilla hardness of stone, and yes, cobblestone is not instamineable in vanilla. It's also the default target, and every selected block uses the same value.
Toggles
Rather than typing blocks separately into the block list, ores and logs each get their own dedicated toggle in the config screen.
| Toggle | Spans | Default |
|---|---|---|
| Ores | All 18 stone, deepslate and nether variants | On |
| Logs | All 48 log/stem, wood/hyphae, and stripped variants | Off |
| Planks | All 13 overworld including bamboo planks and nether variants | Off |
Everything else, individual blocks like deepslate or end stone, still goes in the block list.
Config file
config/instamine.json is created on first launch with these defaults:
{
"blocks": [
"deepslate",
"end stone",
"cobblestone",
"cobbled deepslate"
],
"hardness": 1.5,
"enabled": true,
"ores": true,
"logs": false,
"planks": false
}
Dedicated servers don't have Mod Menu, so edit the file there.
Multiplayer
- Dedicated servers still need Cloth Config installed.
- Having the mod client-side only won't let you instamine on servers that don't have the mod installed.
Instamine works server-side for all players, technically even without the mod installed on their client. Installing it on the client too is recommended however, mainly so that the mining animation stays visually consistent.
Project description from CurseForge.
Pick your setup
Instamine by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.3
1 loader build26.2
1 loader build26.1.2
1 loader build26.1.1
1 loader build26.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Instamine versions and loaders
Instamine 1.2.12 for 26.3
instamine-1.2.12-26.3.jar
6 Nov 2026
instamine 1.2.11 for 26.3
instamine-1.2.11+26.3.jar
13 Oct 2026
instamine 1.2.10 for 26.3
instamine-1.2.10+26.3.jar
4 Oct 2026
instamine 1.2.9 for 26.3
instamine-1.2.9+26.3.jar
17 Sept 2026
Instamine 1.2.8 for 26.2
instamine-1.2.8+26.2.jar
25 Jul 2026
Instamine 1.2.7 for 26.2
instamine-1.2.7+26.2.jar
18 Jun 2026
Instamine 1.2.6 for 26.1.2
instamine-1.2.6+26.1.2.jar
30 May 2026
Instamine 1.2.5 for 26.1.2
instamine-1.2.5+26.1.2.jar
17 May 2026
Instamine 1.2.4-beta for 26.1.2
instamine-1.2.4+26.1.2.jar
15 May 2026
Instamine 1.2.3-beta for 26.1.2
instamine-1.2.3+26.1.2.jar
14 May 2026
instamine 1.2.2-alpha for 26.1.2
instamine-1.2.2.jar
12 May 2026
1.2.1+26.1.2-alpha
instamine-1.2.1.jar
10 May 2026
Looking for an older file? The official CurseForge project page is in Resources.