E21S's Copper upgrade

The mod allows you to upgrade your tools with copper, making copper a more sought after resource

316 Downloads

forgeneoforgeequipment

Rent Server with this Mod

Screenshots

About this Mod

**The mod allows you to upgrade your tools with copper, making copper a more sought after resource. To upgrade a tool, you need to find a structure called a blocked passage, dig it up and find a treasure chest containing a copper rune. Also, to upgrade, you need to melt a copper ingot in a furnace to get molten copper. Using a copper rune and molten copper on a blacksmith's table, you can upgrade any of your tools, making them much more efficient.**

The official E21S author page and the latest mod versions are only available on modrinth. I am not responsible for other sources and the files they post under the guise of my mods.

Available Versions

E21S's Copper upgrade 2.1release

MC 1.20.1forge

April 9, 2026

E21S's Copper upgrade 2.0.2release

MC 1.20.1forge

February 14, 2026

E21S's Copper upgrade 2.0.1release

MC 1.20.1forge

February 1, 2026

E21S's Copper upgrade 2.0release

MC 1.20.1forge

January 27, 2026

E21S's Copper upgrade 1.1.3 (neoforge 1.21.8)release

MC 1.21.8neoforge

October 30, 2025

How to Install E21S's Copper upgrade 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 (1.21.8).

Install Mod

Open the mod browser in the dashboard and search for "E21S's Copper upgrade". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

forgeneoforge

Minecraft Versions

1.21.8, 1.21.4, 1.20.1

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

E21S's Copper upgrade 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 (1.21.8). You can switch loaders with one click in the panel.

Is E21S's Copper upgrade compatible with forge and neoforge?

E21S's Copper upgrade officially supports forge, neoforge for Minecraft 1.21.8, 1.21.4, 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with E21S's Copper upgrade – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if E21S's Copper upgrade 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.