Hexxit Wiki
Biomes Any
Type Multiblock
Size 5x5
Added By Tinkers' Construct

The Smeltery is a multi-block structure in the Tinkers' Construct mod that melts Ore, Gravel Ore, Oreberry, Ingots, Metal and Alloy Blocks, and Obsidian into liquids that can then be poured into casts. 


The Smeltery is used to melt down ores and metals to be used in casting or creating Alloys. When smelting raw ore, 2 ingots will be produced from the ore, while a typical furnace would only yield 1.

  1. Fill the Seared Tank with buckets of lava. Each tank holds up to four.
  2. Put ores/ingots/blocks of the material in the Smeltery Controller (right-click controller to open GUI).
  3. Let the Smeltery melt the material, this will take different lengths of time depending on material.
  4. Empty the liquid metal into a Casting Table or Casting Basin by right-clicking on the faucet. This requires a Seared Faucet to be properly placed on the Smeltery Drain.
  5. Let it cool.

You cannot add material to the Smeltery by manually placing it in the space. All materials must be added using the Smeltery Controller.


These are the materials that can be smelted using a Smeltery. These materials can only be used with the smeltery and cannot be used in a Part Builder.


  • With a Hopper and a Chest, you can also automatically feed in smeltable assets and materials into the Smeltery Controller. Just make sure to place the hopper while shift clicking one side of the smeltery controller. This is extremely useful when smelting vast amounts of Materials
  • A way to automate the smeltery is to have a redstone signal to the faucet constantly pulsing, causing it to pour. Having a hopper under the casting table (which preferably would have an ingot mold), would take the ingots/tool heads, etc. out of the casting table, and could either be feeding into a chest directly or lead to a chain of other hoppers.
  • Another way is to place a Redstone comparator next to a hopper underneath the casting basin or table. so that the two-torch side is against the hopper. It will put out a very small pulse when an item goes through the hopper, which by using a repeater can be wired up to the faucet and perpetuate the process. This does not always seem to work smoothly and may take some work to perfect. The benefit is that it creates much less lag than a redstone clock has the potential to.

    The Smeltery and You Automation

    (This demonstrates how to build an automatic smeltery, but the wireless setup shown uses items from a Tinker's Construct plugin not included in the Hexxit modpack.)

Construction Guide[]

Assembling the smeltery is as easy as following the Mighty Smelting book you are automatically given by the game once you make all of the Smeltery parts. It will tell you the exact quantities of the items needed to complete a working, basic smeltery. The instructions to create the Smeltery parts are located in the copy of Materials and You (volume 1) that you get at the beginning of the game when you spawn. Generally, you want to have several layers for maximum efficiency, as it would be a slow and tedious process of continuously adding nine ore to the smelter, 4 to five is optimum.

Smeltery construction is easy. It's just a floor and four walls. As an analogy, imagine constructing a building.  You must start with a ground level, then you add a first wall layer, and a second wall layer.  The smeltery is no different, except there are four requirements.

Smeltery Requirements[]

  • There must be a 3x3 area of Seared Bricks acting as the base floor. This space must forever remain open for the Smeltery to function properly. Don't place nor break any blocks from this 3x3 area.
  • There must be a Seared Tank in the wall.
  • There must also be a Smeltery Controller in the wall.
  • You must have a Smeltery Drain attached (with a Seared Faucet, and something for it to drain into) if you intend to ever extract the molten ore from the Smeltery.

All bricks used in the smeltery. Please note that the Smeltery Drain has its faucet attached, though there's no casting table or casting basin below the faucet.

Other than the few required bricks, you may use any combination of other bricks to fill out the space. Pictured are the bricks used in Smeltery construction.  On the left, the Seared Bricks (which make up the 3x3 floor of the Smeltery).  Immediately after that are the Seared Glass and Seared Window blocks, the Seared Tank  (required for Smeltery construction), the Casting Basin, a Casting Table, and a Smeltery Drain with Seared Faucet sitting atop another Seared Bricks block.

It is important to note that once you add basins and the outer walls, the footprint of the Smeltery can be as much as 7x7. What's important is that the core 3x3 space remain open, and the floor of that space is Seared Brick blocks.

If you need a more descriptive guide, looking up smeltery construction videos in YouTube is a decent alternative. 

There are four steps in construction. "Roll up them sleeves" and get started!

Construction Steps[]

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Step 1. Place the 3x3 ground layer of Seared Bricks. This is the first layer. It's easiest to just sink this into the ground so that it's flat with the surface around it. The rest of the Smeltery will be built above this point.

Step 2. Place the second layer. Note that the bricks for the outer wall sit OUTSIDE of the 3x3 Seared Bricks floor. Two pictures provided to show progress of the build. Finish the second layer by placing a Smeltery Controller and a Seared Tank . I does not matter where in the outer wall you place these items; they simply must be present. You will know if you have completed this correctly if the Smeltery Controller begins to show a Furnace-fire particle.

Step 3. Build the third layer. You may use any combination of bricks to do this, but you must include a Smeltery Drain (and Seared Faucet and Casting Table or Casting Basin) so you can draw the molten metal out of the Smeltery.

Step 4. Add lava to the Seared Tank by right-clicking the tank with a Lava Bucket. The tank can hold four buckets worth of lava(4000mb).

Done! That's it. Add as many drains as you like, or make the walls entirely out of Seared Window or Seared Glass blocks (making sure that the second layer contains the Seared Tank and the Smeltery Controller!) if it suits your fancy. You can also make the Smeltery as tall as you'd like, and having a taller Smeltery will allow you to smelt more metal at once.  Just don't fill in that 3x3 space in the middle!

Happy Smelting!


  • Make sure to empty your Smeltery after every use completely, because small amounts of previously smelted materials can block your casting tables or casting basins. The small quantities of molten material will pour into containers and leave them partially full, unable to be interacted with. To resolve this, either break the casting table/basin or smelt and pour in more of the material you are stuck to top off the material.
  • Materials that do not combine to make an alloy can be smelted whilst another previously smelted material is still in the smeltery. The materials will be drained off from the bottom of the smeltery first (i.e. in the order in which they were smelted). For example, if there is liquid iron in the smeltery, melting down aluminium will result in two layers of liquid metal.
  • Standing inside the smeltery is not recommended - it will damage 1 point every 5 seconds, and it damages armors, but doing so will cause your tank to fill with blood.
  • Seared tanks can each hold up to 4 buckets of lava
  • If a Villager falls into a smeltery, it will add a layer of Liquified Emerald in the smeltery; this makes villager farms much more useful in Hexxit.
    • Each tick of damage the Villager takes whilst in the smeltery results in 1 nugget of Liquified Emerald
    • Smelteries can naturally spawn in villages increasing the chance of a Villager falling into it.


Some alternate step images and configurations to show Smeltery options.

Video Gallery[]