JEI UU Assembler

JEI addon for IC2 UU Assembler and more machines.

1.6K Downloads

forgeutility

Rent Server with this Mod

Screenshots

About this Mod

Addon for Just Enough Items and IC2.
Simply shows IC2Exp UU Assembler recipes in JEI.
Modpacks can utilize classic UU-matter and UU Assembler in experimental IC2, and makes use of this mod.

Now also shows recipes for:

UU assembly bench
Mass Fabricator
Geothermal generator
Semifluid generator
Fluid heater
Fluid heat exchanger
Stirlilng kinetic generator
Steam boiler
Steam turbine
Fermenter

Dependends on:
IC2 Experimental
Just Enough Items/Had Enough Items
MixinBooter ~~~~

Usage screenshot:
JEI showing UU Assembly Bench recipes

Available Versions

1.2.4release

MC 1.12.2forge

October 15, 2025

1.2.3release

MC 1.12.2forge

August 31, 2025

1.2.2release

MC 1.12.2forge

August 6, 2025

1.2.1release

MC 1.12.2forge

August 2, 2025

1.1.0release

MC 1.12.2forge

January 24, 2025

How to Install JEI UU Assembler on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set forge Loader

In the panel under "Egg", select the forge loader and matching Minecraft version (1.12.2).

Install Mod

Open the mod browser in the dashboard and search for "JEI UU Assembler". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

forge

Minecraft Versions

1.12.2

Server-side

~ Optional

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

JEI UU Assembler server crashes on startup – what to do?

Most common cause: wrong forge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.12.2). You can switch loaders with one click in the panel.

Is JEI UU Assembler compatible with forge?

JEI UU Assembler officially supports forge for Minecraft 1.12.2. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with JEI UU Assembler – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if JEI UU Assembler consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.