CurseForge · Minecraft mod
GTToolMapper
Automatically maps GregTech machine recipes (Assembler, Chemical Reactor, etc.) and fluids to ProjectE EMC values
Quick answer
Which GTToolMapper release should I use?
gttoolmapper-1.4.jar targets 1.20.1 with Forge. 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 GTToolMapper 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 gttoolmapper-1.4.jar need?
gttoolmapper-1.4.jar. Change the file and its required mods may change too.
Install ProjectE, GregTech CEu Modern first. We found matching files for this game-version and loader setup. 6 come through another mod in the chain.
6 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 GTToolMapper without breaking your instance.
Built for gttoolmapper-1.4.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use gttoolmapper-1.4.jar. It targets 1.20.1 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install ProjectE, GregTech CEu Modern first. We found matching files for this game-version and loader setup. 6 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 gttoolmapper-1.4.jar. It opens that exact file at the source.
About this project
What does GTToolMapper add?
GTToolMapper: GregTech & ProjectE Integration
GTToolMapper is a specialized compatibility addon that bridges the gap between GregTech CEu Modern and ProjectE.
By default, ProjectE cannot "see" recipes inside complex GregTech machines (like the Assembler, Chemical Reactor, or Fluid Extractor). This means complex components like Electric Motors, Circuits, and Cables often have no EMC value, breaking the progression in high-power modpacks like Monifactory.
This mod acts as a custom EMC Mapper, scanning GregTech's internal recipe registries and teaching ProjectE how to calculate costs for machine-only items.
Key Features
- Machine Recipe Scanning: Automatically maps recipes from the Assembler, Chemical Reactor, Fluid Extractor, Wiremill, and more.
- Fluid EMC Support: Successfully calculates EMC for GregTech fluids (e.g., Molten Iron, Rubber, Soldering Alloy) by tracing them back to their solid ingot/dust forms.
How It Works
Install the Mod: Drop the
.jarinto yourmodsfolder alongside GregTech CEu Modern and ProjectE.Launch the Game: The mapper runs automatically during the server startup/recipe registration phase.
Check Your EMC: Items that were previously un-mappable (like Cables, Rotors, and huge pipes) should now have valid EMC values derived from their raw materials.
Requirements
- Minecraft Version: 1.20.1
- Dependencies:
- GregTech CEu Modern
- ProjectE
This mod is designed for the community and is open for inclusion in any modpack.
Project description from CurseForge.
Pick your setup
GTToolMapper by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.20.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
GTToolMapper versions and loaders
gttoolmapper-1.4.jar
6 Aug 2026
gttoolmapper-1.3.jar
31 Jul 2026
gttoolmapper-1.1.jar
21 Jan 2026
gttoolmapper-1.0.jar
21 Jan 2026
Looking for an older file? The official CurseForge project page is in Resources.