Alloy Smelter

Alloy Smelter

Adds a multi-block structure for smelting ores

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41.2K Downloads
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Screenshots

JEI Integration
Alloy Smelter Screenshot 2
Alloy Smelter Screenshot 3

About this Mod

Alloy Smelter

This mod adds 3 levels of multi-block structure for smelting ore, made of Bricks, made of Polished Blackstone, made of End Stone Bricks. All recipes from lower level forges work in higher level forges. In its basic configuration, it serves as a simple way to increase the speed of smelting ores, but you can add recipes and change block for forge as you see fit. These features are primarily intended for mod and modpack authors.

Example

IMPORTANT

If you have an old version of the mod and you updated to the new version, where there are 5 slots in the forge, if you placed forge block in your world, the world will not start. Break all the forge blocks in your world, then update the mod.

There are only two smelting recipes for each vanilla ore for each forge level. When smelting one item, it can be placed in any slot in the forge. If a recipe contains 2+ items, the order in which they are placed in the slots is important.

Features

Forge automation

You can use both hoppers and blocks from other mods (ae2, etc.) to automate the forge. For the pattern provider (ae2): on any side except the top and bottom. For hoppers: the output slot is located inside the forge, and the input slot is on top. The hopper loads items into the input slots like a chest; the hopper does not have access to the fuel slot.

Change blocks for each level of the forge.

To change the blocks required for the forge, you need to add the required tag to the block. You can do this using datapack or kubejs.

Each forge level has its own BlockTag:

  • Forge Tier 1: alloy_smelter:alloy_smelter_blocks_tier1
  • Forge Tier 2: alloy_smelter:alloy_smelter_blocks_tier2
  • Forge Tier 3: alloy_smelter:alloy_smelter_blocks_tier3

Add custom fuel

If you want to add fuel for the smelter, just add this tag "alloy_smelter:alloy_smelter_fuel" to any other fuel.

Add and edit recipes for the forge

To create a recipe you can use datapacks or kubejs. Having created a json file with your recipe.

Example of json recipe

1.21.4

{
  "type": "alloy_smelter:smelting",
  "ingredients": [
    {
      "ingredient": "minecraft:raw_copper",
      "count": 1
    },
    {
      "ingredient": "minecraft:raw_iron",
      "count": 2
    }
  ],
  "result": {
    "id": "minecraft:diamond",
    "count": 2
  },
  "smeltingTime": 200,
  "fuelPerTick": 1,
  "requiredTier": 2
}

1.21.1

{
  "type": "alloy_smelter:smelting",
  "ingredients": [
    {
      "ingredient": { "item": "minecraft:raw_copper" },
      "count": 1
    },
    {
      "ingredient": { "item": "minecraft:raw_iron" },
      "count": 2
    }
  ],
  "result": {
    "id": "minecraft:diamond",
    "count": 2
  },
  "smeltingTime": 200,
  "fuelPerTick": 1,
  "requiredTier": 2
}

1.20.1

{
  "type": "alloy_smelter:smelting",
  "ingredients": [
    {
      "item": "minecraft:raw_copper",
      "count": 1
    },
    {
      "item": "minecraft:raw_iron",
      "count": 2
    }
  ],
  "result": {
    "item": "minecraft:diamond",
    "count": 2
  },
  "smeltingTime": 200,
  "fuelPerTick": 1,
  "requiredTier": 2
}

Mod uses some resources from Alloy Forgery

Copyright (c) Wisp Forest, MIT License

My mod analog Alloy Forgery for Forge with my ideas and implementations.

Available Versions

Alloy Smelter 1.2.1 for 1.21.1release
MC 1.21, 1.21.1neoforge
December 15, 2025
Alloy Smelter 1.2.1 for 1.20.1release
MC 1.20.1forge
December 15, 2025
Alloy Smelter 1.2.0 for 1.21.1release
MC 1.21.1neoforge
November 24, 2025
Alloy Smelter 1.2.0 for 1.20.1release
MC 1.20.1forge
November 24, 2025
Alloy Smelter 1.1.6 for 1.21.1release
MC 1.21.1neoforge
November 23, 2025

How to Install Alloy Smelter 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 (1.21.4).

3

Install Mod

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

Compatibility

Mod Loaders

forgeneoforge

Minecraft Versions

1.21.4, 1.21.1, 1.21 (+6 more)

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Alloy Smelter 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 (1.21.4). You can switch loaders with one click in the panel.

Is Alloy Smelter compatible with forge and neoforge?

Alloy Smelter officially supports forge, neoforge for Minecraft 1.21.4, 1.21.1, 1.21. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Alloy Smelter – how to optimize performance?

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

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Install Alloy Smelter with just one click on your server.

Recommended RAM
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Details

License
LicenseRef-Custom
Server-side
Required

Supported Versions

1.21.41.21.11.211.20.61.20.51.20.41.20.31.20.21.20.1