Furnace
The Furnace is a 200-credit machine that smelts 2 pieces of Metal Ore or Scrap Metal into 1 Metal Ingot each night. It draws 8 power per night. Ingot purity depends on the inputs: ore makes cleaner ingots than scrap, and Flux Smelting Agent or a Quality bonus can push purity higher.
| Item ID | furnace |
| Value | 200 credits |
| Base power draw | 8 per night |
| Slots | Power Source, Modules, Input, Output, Note |
| Modules | Universal modules and Furnace modules |
| Description | “Refines 2 pieces of either metal scrap or ores into a metal ingot. Requires Energy. Overnight.” |
How do I use the Furnace?
- Put an Energy Cell in the Power Source slot.
- Put at least 2 Metal Ore or Scrap Metal in the Input grid. Flux goes in the same grid.
- Leave room in the Output grid. The machine only smelts when the output can take an ingot.
- Sleep. One smelting runs per night: 2 inputs become 1 Metal Ingot.
When both are present, the Furnace uses Metal Ore before Scrap Metal.
What decides ingot purity?
Ingots have six purity levels. They start at Low, and each factor moves the level up:
| Factor | Effect |
|---|---|
| Both inputs are Metal Ore | +2 levels |
| One ore, one scrap | +1 level |
| Both inputs are Scrap Metal | +0 |
| Flux Smelting Agent (Basic) or (Advanced) | at least +1 level |
| Quality bonus on the machine | +1 level per 100 |
The Flux bonus and the Quality bonus do not add together: the level from Quality is raised to at least 1 when flux is present. Basic flux (4 credits) is consumed only when it is needed to reach that +1. Advanced flux (300 credits) is reusable.
| Purity (EN) | Purity (RU) | Level | Ingot value modifier |
|---|---|---|---|
| Perfect Purity | Идеальная чистота | 10 | +200% |
| Very High Purity | Очень высокая чистота | 9 | +50% |
| High Purity | Высокая чистота | 8 | +25% |
| Fair Purity | Достаточная чистота | 7 | 0% |
| Low Purity | Низкая чистота | 6 | -15% |
| Very Low Purity | Очень низкая чистота | 5 | -25% |
So two ores plus flux make a Very High Purity ingot, and Perfect Purity needs a Quality bonus of 200 on top of two ores. A Metal Ingot is worth 50 credits at Fair Purity, Metal Ore 15, Scrap Metal 10. The official instruction note says Quality for this machine means maximum purity, Efficiency means power consumption, and Performance has no effect.
Which modules does it take?
| Module | What it does |
|---|---|
| Furnace Module (Blast) | 3 materials make 2 Metal Ingots, at slightly lower purity (-1 level). Efficiency -100. Does not stack. |
| Furnace Module (Junk Processing) | Turns 6 Junk into 4 Scrap Metal. Used only on nights when no ingot is smelted. |
| Quality Module, Refinement Module, Neural Core Modules | Universal modules that add Quality bonus (+8, +25, +50 / +100). |
What else are ingots for?
Scrap Metal or a Metal Ingot used on a Water Tank enlarges it. Scrap adds 2000 ml. An ingot adds more at higher purity: 4000 ml (Low), 6000 ml (Fair), 8000 ml (High), 10 000 ml (Very High), 14 000 ml (Perfect). A tank holds 20 000 ml at the start and 50 000 ml at most.
FAQ
Does the Furnace need ore or is scrap enough? Scrap Metal is enough. Ore just gives cleaner ingots.
Can I smelt faster? Only one smelting happens per night. Turbo Boosters apply to machines tagged as eligible; the Furnace is not tagged as one in the item data.
What is the Junk module for? It converts Junk into Scrap Metal that the Furnace can then smelt.
How do I see an ingot’s purity? Purity shows in the tooltip once it has been tested.