Diff - furnace - Starsand Island Wiki

11 Furnace

33 The Furnace is a crafting station that smelts raw ores into ingots, alloys, and other processed metals. It is one of the most essential stations in the game, required for producing nearly all metal components used in tool upgrades, building, vehicle construction, and advanced crafting. The Furnace has three tiers, each unlocking additional smelting recipes while retaining all recipes from previous tiers.

55 How to Obtain

77 The Furnace I blueprint is included in the Equipment Blueprint Pack, which is available for free from the General Store early in the game. This pack also includes the Cutter I and Charcoal Kiln blueprints. Once you have the blueprint, build the Furnace at a Worktable I using 5 Stone.

99 To use the Furnace, place it on your farm, interact with it, select a recipe from the list, and provide the required ore and fuel. Unlike the Brewing Barrel or Cutter, the Furnace processes items relatively quickly, so you generally do not need multiples of it.

1010

1111 Upgrade Path

1212

1313 Crafting stations in Starsand Island are upgraded through the station's own interface. Interact with the Furnace, select the Upgrade button in the bottom-left corner, and provide the required materials. The station transforms in place without needing to be broken down and rebuilt.

1414

1515 TierBuild from ScratchUpgrade from Previous TierCrafted AtBlueprint UnlockFurnace I5 StoneN/A (initial build)Worktable IEquipment Blueprint Pack (free)Furnace II5 Stone Brick + 5 Charcoal + 5 Bronze5 Bronze + 5 Stone BrickWorktable IIJunior Crafter questlineFurnace III1 Mini Reactor + 4 Coal + 3 Alloy1 Mini Reactor + 2 AlloyWorktable IIISenior Crafter questline

1616 Upgrading an existing Furnace costs fewer materials than building a new one from scratch. If you already have a Furnace I placed on your farm, upgrading it to Furnace II is always cheaper than crafting a standalone Furnace II.

1717

1818 Fuel

1919

2020 All smelting recipes require fuel in addition to the raw ore. The fuel type changes depending on the recipe tier.

2121

2222 FuelSourceUsed InCharcoalCharcoal Kiln (Softwood + Fiber)All Furnace I recipes, plus Radiant Core and Glass Brick at higher tiersCoalMined in the Moonlit Forest (Dreamfall Garden and deeper)Furnace II exclusive recipes (Iron Ingot, Gold Ingot, Magnet, Alloy, Starflare Core)OilstoneMined in deep Moonlit Forest zonesFurnace III exclusive recipes (Aurorite Ingot, Flamecore Ingot, Lunar Core, Eternal Alloy)

2323 Charcoal is crafted at the Charcoal Kiln, which is obtained alongside the Furnace in the Equipment Blueprint Pack. A Charcoal Kiln converts Softwood and Fiber into Charcoal. The Charcoal Kiln is also used to produce Salt from Salt Brick and Fiber.

2424

2525 Furnace Tiers

2626

2727 The Furnace upgrades through three tiers. Each higher tier retains every recipe from the tier below while adding new ones. Higher tiers also process batches faster.

2828

2929 Furnace I

3030

3131 The starting tier, available from the Equipment Blueprint Pack. Handles early-game smelting using Charcoal as fuel.

3232

3333 OutputInputFuelCopper Ingot4x Copper Ore1x CharcoalTin Ingot4x Tin Ore1x CharcoalBronze1x Copper Ingot + 1x Tin Ingot1x CharcoalStone Brick4x Stone1x CharcoalGlass Brick4x Quartz1x CharcoalRadiant Core4x Fluorite1x Charcoal

3434 Copper Ingots are the first metal you will smelt. They are needed for tools like the Impulse Pickaxe, the Ore Analyzer, and various early-game equipment. Bronze (a Copper-Tin alloy) is used for the Bronze Pickaxe, which is required to mine Iron Ore in the Moonlit Forest. Stone Bricks and Glass Bricks are key building materials used in farm structures, fences, and home upgrades.

3535

3636 Furnace II

3737

3838 The second tier is unlocked through the Crafter profession questline with Zerine. Progressing through the Apprentice and Junior Crafter trials unlocks the Furnace II blueprint at the General Store. Furnace II uses Coal instead of Charcoal for its new recipes, though Furnace I recipes carried over still use Charcoal.

3939

4040 OutputInputFuelIron Ingot4x Iron Ore1x CoalGold Ingot4x Gold Ore1x CoalAlloy1x Copper Ingot + 1x Iron Ingot + 1x Gold Ingot1x CoalMagnet4x Magnetite1x CoalStarflare Core4x Primorite1x Coal

4141 Iron Ingots are the workhorse metal of mid-game. They feed into tools, building materials, vehicle parts, and dozens of crafting recipes. Gold Ingots are used for premium crafting, jewelry (excellent NPC gifts), and special structures like the Selective Breeding House. Alloy is a composite metal combining Copper, Iron, and Gold Ingots; it is used in advanced equipment and is itself a component in upgrading to Furnace III.

4242

4343 Furnace III

4444

4545 The final tier, unlocked at the Senior Crafter level. Furnace III recipes use Oilstone as fuel rather than Coal. The ores required for these recipes are found in the deepest zones of the Moonlit Forest.

4646

4747 OutputInputFuelAurorite Ingot4x Aurorite Ore1x OilstoneFlamecore Ingot4x Flamecore Ore1x OilstoneLunar Core4x Moonstone1x OilstoneEternal Alloy1x Alloy + 1x Aurorite Ingot + 1x Flamecore Ingot1x Oilstone

4848 These endgame materials are used in Expert-tier tools, the most powerful equipment, and late-game building projects. Aurorite Ingot is needed for the Aurorite Pickaxe, which can mine the rarest ores (Oilstone, Starflare Crystal, Diamond). Eternal Alloy is required for top-tier tools like the Electric Drill and Chainsaw. Because Eternal Alloy requires both Aurorite Ingot and Flamecore Ingot, plan your ore runs to collect Aurorite Ore and Flamecore Ore in the same trip.

4949

5050 Processing Speed

5151

5252 The Furnace I (Stone Furnace) processes one batch in approximately 30 seconds of game time. Furnace II and III cut processing time to approximately 15 seconds and handle larger batches. The faster speed at higher tiers makes bulk smelting significantly more efficient.

5353

5454 TierProcessing Time per BatchNotesFurnace I~30 secondsAdequate for early-game volumeFurnace II~15 secondsHandles mid-game bulk smeltingFurnace III~15 secondsSame speed as II but processes endgame ores

5555 Tips

5656

5757 Keep a stockpile of Charcoal and Coal. Running out of fuel in the middle of a smelting session is a common bottleneck. Build extra Charcoal Kilns if needed.Copper Ore and Tin Ore are found on the surface and in the early Moonlit Forest zones. You do not need to go deep for Furnace I materials.Prioritize the Crafter profession questline with Zerine to unlock Furnace II as early as possible. Iron Ingots are needed for a huge number of mid-game recipes.The Ore Analyzer is worth using before smelting. It has a 5 to 10% chance of producing rare bonus drops from raw ore, which can save mining trips.Unlike the Cutter and Brewing Barrel, the Furnace processes quickly enough that you rarely need more than one. One Furnace handles most smelting needs.Smelt all your raw ore before leaving the Moonlit Forest if you have a camp with a Furnace. Ingots stack efficiently and weigh less than raw ore in your inventory.Always upgrade an existing Furnace rather than crafting a new higher-tier one from scratch. Upgrading uses fewer materials than building a standalone Furnace II or III.Stock up on Oilstone before you start Furnace III smelting. Every Furnace III exclusive recipe requires Oilstone as fuel, and it is only found in the deepest forest zones.When crafting Eternal Alloy, remember that it requires Alloy as an input. Alloy itself needs Copper Ingot, Iron Ingot, and Gold Ingot, so gather all three ore types on your forest runs.

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