Smeltery IO

Smeltery IO

Tinkers Construct Smeltery Fuel and Casting Addon

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2.7K Downloads
forgeequipment
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About this Mod

Official MCT Discord Server Here.

* 1.3+ is NOT BACKCOMPATIBLE with 1.2 due to TE registration fixes *

Tinkers Construct Smeltery Fuel and Casting Addon

MCT Logo

This mod was inspired by Tinker I/O, and has some very similar functions. However, this mod requires fuel in the form of Snowballs to speed up your casting. Also the casting process can be completely automated by turning on the function to allow upgrades and casts to be inserted/extracted.

To make the mod easier to use, I suggest grabbing Upsizer Mod as well as a mod that can allow you to make Snowballs.

Smeltery1
Smeltery2

Fuel Controller

Requires a form of Solid Fuel.

You can heat up your Smeltery to much higher temperatures than with Liquid Fuels (Still required to make the Smeltery work). You can increase the Ratio with Speed Upgrades.

Fuel Controller

Casting Machine

Requires Snowballs as Fuel for Casting Items.

You can speed up the casting process with Speed Upgrades, Control it with a Redstone Signal, and increase the output capacity. You can also switch between Casts and Basin Mode with an upgrade. Casting Automation can also be achieved by unlocking the cast/upgrade slots. They can only be extracted when the tank is empty and the machine is no longer processing.

Casting Machine

Smeltery Input

Inputs items from any item transport (Hoppers, Pipes, Conveyors, etc) in to the Smeltery Controller.

Smeltery Input

You may use this mod in any modpack, and put a link back to this page as a courtesy!

Available Versions

Smeltery IO 1.3.70release
MC 1.12.2forge
February 17, 2026
Smeltery IO 1.3.68release
MC 1.20.1forge
January 27, 2026
1.2.63release
MC 1.12.2forge
August 1, 2024

How to Install Smeltery IO on Your Server

1

Order Server

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

2

Set forge Loader

In the panel under "Egg", select the forge loader and matching Minecraft version (1.20.1).

3

Install Mod

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

Compatibility

Mod Loaders

forge

Minecraft Versions

1.20.1, 1.12.2

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Smeltery IO 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 (1.20.1). You can switch loaders with one click in the panel.

Is Smeltery IO compatible with forge?

Smeltery IO officially supports forge for Minecraft 1.20.1, 1.12.2. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Smeltery IO – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Smeltery IO 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.

Rent Modded Server

Install Smeltery IO with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
Creative Commons Attribution Non Commercial Share Alike 4.0 International
Server-side
Required

Supported Versions

1.20.11.12.2