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Smelting ore down to usable ingots has never been this easy! Feed it whatever ore you find, set the recipe, and out comes the life-blood of any successful factory!
~ Caterina Parks's assistant Steve

The Smelter is a building used to smelt raw ores into ingots.


Recipe Ingredients Duration Products Unlocked by
Caterium Ingot
3 × Caterium Ore.pngCaterium Ore45 / min
4 sec
1 × Caterium Ingot.pngCaterium Ingot15 / min
MAM Caterium Research - Caterium Ingots
Copper Ingot
1 × Copper Ore.pngCopper Ore30 / min
2 sec
1 × Copper Ingot.pngCopper Ingot30 / min
Tier 0 - HUB Upgrade 2
Iron Ingot
1 × Iron Ore.pngIron Ore30 / min
2 sec
1 × Iron Ingot.pngIron Ingot30 / min
Pure Aluminum Ingot
2 × Aluminum Scrap.pngAluminum Scrap60 / min
2 sec
1 × Aluminum Ingot.pngAluminum Ingot30 / min
Tier 7 - Bauxite Refinement


Main article: Clock speed

The Smelter can be overclocked using Power Shards. Overclocking increases the input/output speed of the Smelter at the cost of exponentially increased power demand.

Clock speed 25% 50% 75% 100% 150% 200% 250%
Consumption (MW) 0.64 1.6 2.73 4 6.84 10 13.43


  • All Smelter recipes have more effective alternatives in Refineries, obtained as alternate recipes. In the late game, Smelters can be completely replaced by Refineries, at the cost of requiring a bit more space and drawing more power, but greatly increasing ingot yield (except for Aluminum).



  • Patch Fixed incorrect material application on the Smelter and Foundry
  • Patch Updated VFX for the Smelter and Coal Generator
  • Patch 0.3: Clearance tweaks for Foundry, Constructor & Smelter
  • Patch 0.1.10: Re-aligned Foundry and Smelter's inputs to allow for tighter connections
  • Patch 0.1.9: Adjusted alignments of I/O:s on Foundry, Coal Generator, Fuel Generator, Oil Refinery, Constructor, Smelter and Assembler
  • Patch 0.1.5: Clearance adjustments for Smelters, Constructors, and Assemblers
  • Patch Closed Alpha 3: Implemented the Significance Manager and added support for Smelters and Constructors
  • Patch Closed Alpha 2: Building Sounds: Smelter and miner will no longer animate & make sounds when idle.