Tinkers: Smeltery & Expanding

A Smeltery is a hollow, lava-powered multiblock for melting metals, doubling many ore outputs, alloying liquids, and casting tool parts.

Parts to gather

For a compact starter build, prepare Seared Bricks and craft:

• 1 Smeltery Controller
• 1 Seared Tank or Seared Window for lava
• 1 Seared Drain
• 1 Seared Faucet
• 1 Casting Table and/or Casting Basin
• Enough Seared Bricks, Seared Glass, or Seared Windows for the floor and walls

Build a 3×3 interior Smeltery

1. Make a solid 5×5 Seared floor. The usable interior will be 3×3.
2. Build a one-block-high Seared wall around the edge, leaving the 3×3 center hollow.
3. Replace wall blocks with the Controller, Tank, and Drain. They must be part of the outer wall.
4. Put a Faucet on the outside face of the Drain.
5. Place a Casting Table or Basin beneath the Faucet.
6. Fill the Tank with lava. When valid, the Controller lights up.

The inside stays empty

Do not fill the interior with blocks. The Smeltery is a hollow tank; only the bottom and outside walls are Seared blocks.

Using it

Right-click the Controller to add ores, ingots, or other meltable items. When a material is molten, select it in the liquid list and pour it through the Drain. Tables make ingots and parts; Basins make full blocks.

Expanding safely

• Wider: rebuild the entire outer wall and floor while keeping a rectangular hollow interior.
• Taller: add another complete ring of valid Seared wall blocks. Each layer increases capacity.
• More outputs: add extra Drains, Faucets, Tables, and Basins to the walls.
• More fuel storage: add additional Seared Tanks or Windows connected to the structure.

Break and rebuild only after draining rare liquids. A malformed wall switches the Controller off, but the structure becomes valid again once the shell is repaired.

First casts

Pour Aluminum Brass or Gold around a completed stone tool part on a Casting Table to create a reusable cast. Then pour your chosen molten metal into that cast.