Iron Furnaces guide for All the Mods 10: To the Sky 1.1.1 to 1.2.1

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What is Iron Furnaces?

3 parts

Iron Furnaces is inspired by cpw's Iron Chests mod. Instead of chests, it gives you several tiers of furnace that smelt faster, have sides you can reconfigure, and can take augments for things like smoking and blasting. It is for anyone who is tired of waiting on a vanilla furnace and wants a simple, upgradeable smelting setup. This pack includes version 4.3.1.[1][2]

The upgrade ladder

The pack's quest chapter treats the furnaces as a step-by-step upgrade path. A normal furnace takes 200 ticks to smelt one item, and the Copper Furnace takes 180. The Iron Furnace takes 160 ticks (8 seconds). Next come the Silver Furnace at 140 ticks (7 seconds) and the Golden Furnace at 120 ticks. Above those is the Diamond Furnace, which the Speed augment quest describes as smelting every 80 ticks.[3]

Start with "Copper Furnace" quest and "Iron Furnace" quest. They unlock the rest of the chapter, including the settings, heat and augment quests.[3]

What else it adds

Where it leads

The mod page highlights the Rainbow Furnace, asking whether you can craft it and unlock its power. In this pack, the "Rainbow Plating" quest quest asks for 8 Rainbow Plating and says you need every furnace before Netherite, including the Copper, Silver and Crystal ones.[1][3]

The mod is explicitly compatible with JEI and Project MMO, and the developers say it should work with most other mods.[1]

How do you get started with Iron Furnaces?

5 parts

Iron Furnaces gives you a ladder of furnace tiers, and the higher tiers smelt faster. The idea is simple: start from a normal furnace and keep upgrading it. Here is the order I'd go in.[1][3]

Start with the Copper Furnace

Copper is one of the most common ores you can find, so the Copper Furnace is a handy first step. A normal furnace takes 200 ticks to smelt one item (20 ticks is 1 second), and the Copper Furnace takes 180. It's a small gain, but it's the start of the chain. The quest "Copper Furnace" quest covers it.[3]

Copper FurnaceMod recipe

Crafting Shaped

Crafting Shaped
any copper ingotany copper ingotany copper ingot
any copper ingotFurnaceany copper ingot
any copper ingotany copper ingotany copper ingot

Recipe id: ironfurnaces:furnaces/copper_furnace

If you already have a furnace placed, the upgrade items work on it directly: sneak and right-click the furnace with the upgrade, for example Stone to Copper Furnace Upgrade.[4][5]

Move on to the Iron Furnace

This is the one to aim for early. The Iron Furnace takes 160 ticks, or 8 seconds, per item. You can make it from a normal furnace or from a Copper Furnace. The pack's early quest "Smelting iron with iron" quest points you to it too, and it can be configured for automation with the cogwheel in the top left of the furnace screen.[3][6]

Iron FurnaceMod recipe

Crafting Shaped

Crafting Shaped
any iron ingotany iron ingotany iron ingot
any iron ingotFurnaceany iron ingot
any iron ingotany iron ingotany iron ingot

Recipe id: ironfurnaces:furnaces/iron_furnace

Iron FurnaceMod recipe

Crafting Shaped

Crafting Shaped
any iron ingotany iron ingotany iron ingot
any colorless glass blocksany copper furnaceany colorless glass blocks
any iron ingotany iron ingotany iron ingot

Recipe id: ironfurnaces:furnaces/iron_furnace2

Alternative route starting from a Copper Furnace.

Set up the furnace sides

Click the cogwheel in the top left of the furnace screen to open its configuration. You'll find auto-input and auto-output buttons, redstone activation, and a box for each side of the furnace. Each side can input, output, do both, input fuel, or do nothing. This matters when you pipe items in or out.[3][6]

Once one furnace is set up, the Furnace Settings Linker copies all of those settings to other furnaces, which saves a lot of clicking.[3]

Crafting Shaped

Crafting Shaped
Empty slotPaperEmpty slot
PaperFurnacePaper
Empty slotPaperEmpty slot

Recipe id: ironfurnaces:item_copy

Power it without fuel

Wireless heat is an easy way to run your furnaces, and the quest a quest in "Iron Furnaces" unlocks after the Copper and Iron Furnace quests. You need the transmitter and the receiver.[3]

Crafting Shaped

Crafting Shaped
any stoneComparatorany stone
any stoneany redstone storage blockany stone
any stoneFurnaceany stone

Recipe id: ironfurnaces:heater

Crafting Shaped

Crafting Shaped
any stoneany redstone dustany stone
any redstone dustComparatorany redstone dust
any stoneany redstone dustany stone

Recipe id: ironfurnaces:item_heater

  1. Place the Wireless Heat Transmitter and feed it energy.[3][4]
  2. Put the Wireless Heat Receiver into the transmitter to bind it.[3][4]
  3. Put the bound receiver in the furnace's fuel slot and it starts powering the furnace.[3][4]
Watch out: The receiver only works from Iron tier and above, so a plain furnace or a Copper Furnace won't accept it.[4]

Keep climbing

After the Iron Furnace, the next steps are the Silver Furnace at 140 ticks (7 seconds) and the Golden Furnace at 120 ticks. The Diamond Furnace comes after Gold and takes 80 ticks, or 4 seconds. Here are the in-pack recipes for those three.[3]

Silver FurnaceMod recipe

Crafting Shaped

Crafting Shaped
any silver ingotany colorless glass blocksany silver ingot
any colorless glass blocksany iron furnaceany colorless glass blocks
any silver ingotany colorless glass blocksany silver ingot

Recipe id: ironfurnaces:furnaces/silver_furnace

Golden FurnaceMod recipe

Crafting Shaped

Crafting Shaped
any gold ingotany gold ingotany gold ingot
any gold ingotany iron furnaceany gold ingot
any gold ingotany gold storage blockany gold ingot

Recipe id: ironfurnaces:furnaces/gold_furnace

Diamond FurnaceMod recipe

Crafting Shaped

Crafting Shaped
any diamond gemany diamond gemany diamond gem
any colorless glass blocksany gold furnaceany colorless glass blocks
any diamond gemany diamond gemany diamond gem

Recipe id: ironfurnaces:furnaces/diamond_furnace

If you want even more speed later, the Augment: Speed halves the cooktime for all recipes, at the cost of using twice the fuel.[3][4]

Tip: The pack changes the recipes for the Netherite Furnace and the Obsidian to Netherite upgrade. Check the in-pack recipe for them when you get that far, rather than relying on the mod's defaults.[5]

How does Iron Furnaces work?

6 parts

Same as in the All the Mods 10 1.1 guide

Iron Furnaces is built around one simple idea taken a long way: a ladder of furnace tiers that smelt faster and take upgrades, plus a slot system that lets you bolt extra behaviour onto any of them. The project describes the goal as maximising smelting efficiency with speed, reconfigurable sides and augments for smoking and blasting, and in this pack that ladder runs all the way from copper up to the Rainbow Furnace.[1]

The tier ladder

Tiers in this pack form a chain, with each step crafted around the tier below it. Starting from a vanilla furnace you can go to Copper Furnace or Iron Furnace, then on through Silver Furnace, Golden Furnace, Diamond Furnace, Emerald Furnace and Crystal Furnace, up to Obsidian Furnace and Netherite Furnace. Several of those steps have two crafting routes, so you can come up the silver side or the gold side depending on what you have spare.[7]

Above netherite the pack keeps going with the All the Mods metals: Allthemodium Furnace, Vibranium Furnace and Unobtainium Furnace, each built on the tier before it. The top of the chain is Rainbow Furnace, which is assembled from Rainbow Core and Rainbow Plating rather than from another furnace.[7]

Tip: Furnace tooltips tell you to sneak and right-click to upgrade, so you do not have to dismantle a build every time you move up a tier.[8]
Netherite FurnaceChanged by the pack

Crafting Shaped

Crafting Shaped
any netherite ingotMagma Creamany netherite ingot
Magma Creamany obsidian furnaceMagma Cream
any netherite ingotany soul fire base blockany netherite ingot

Recipe id: ironfurnaces:furnaces/netherite_furnace

The pack changed this recipe from the mod default.

Augments

Augments are the mod's upgrade items, and their tooltips say to right-click to insert one. Each of the main augments is a trade-off rather than a straight buff, so pick based on what the furnace is doing in your build.[8]

Crafting Shaped

Crafting Shaped
any stoneany redstone dustany stone
PaperPistonPaper
any stoneany redstone dustany stone

Recipe id: ironfurnaces:augments/augment_factory

Crafting Shaped

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any stoneany redstone dustany stone
PaperRepeaterPaper
any stoneany redstone dustany stone

Recipe id: ironfurnaces:augments/augment_generator

There is also a redstone augment with several modes, switched by right-clicking in the air. Redstone Control mode stops the furnace smelting while it has a redstone signal, Redstone Inverse Control mode only smelts while it has one, Comparator mode makes the furnace act as an internal comparator and output the signal to all sides, and Comparator Subtraction mode does the same but lets you subtract a signal strength configured in the furnace GUI.[8]

An experience augment handles the XP a furnace builds up. In one mode the experience granted from smelting is ejected to nearby fluid tanks, and in the other it is given to the player who placed the furnace. You swap between the two by sneaking and right-clicking in the air.[8]

Item handling and automation

Iron Furnaces furnaces expose configurable sides for item transfer, which is what lets you feed one from a pipe or conveyor on one face and pull finished output from another instead of relying on the vanilla top/bottom/side rules.[1][8]

The mod has explicit compatibility with JEI and Project MMO, and it ships its own JEI categories so you can look up what a furnace will accept in a given mode.[1][8]

Wireless heat

If you would rather run furnaces off your power grid than off solid fuel, the mod gives you a two-part wireless heat system. Wireless Heat Transmitter is the block: you feed it Forge Energy and it powers every Wireless Heat Receiver bound to it. You bind a receiver by placing it inside the transmitter, then drop that receiver into the fuel slot of the furnace you want to run. Receivers only work from Iron tier and above, so a Copper Furnace cannot use them.[8]

Crafting Shaped

Crafting Shaped
any stoneComparatorany stone
any stoneany redstone storage blockany stone
any stoneFurnaceany stone

Recipe id: ironfurnaces:heater

Crafting Shaped

Crafting Shaped
any stoneany redstone dustany stone
any redstone dustComparatorany redstone dust
any stoneany redstone dustany stone

Recipe id: ironfurnaces:item_heater

Watch out: An unbound transmitter will tell you it has yet to be bound to an energy source, so check the tooltip if your furnaces suddenly go cold.[8]

The Rainbow generator

The Rainbow Furnace has a special power mode with strict conditions. For it to generate, one furnace of each tier must be an active generator and must not have a full buffer; the tooltip then lists the RF/tick you get when all of those other furnaces are generating power. Its output goes only to sides you have configured as output and is never added to its own internal buffer, and you can only have one Rainbow Generator.[8]

Extras

Two cosmetic items round things out. Furnace Spooka-lator is right-clicked on a furnace to spookalize it, and sneaking and right-clicking cleanses any spookalizations. Furnace Wrapping Papers wraps a furnace as a gift, and sneaking and right-clicking opens the gift again.[8]

Unverified Furnace Settings Linker is craftable in this pack, but the available sources do not describe exactly which settings it copies or how you apply them, so treat its behaviour as untested until you try it in game.

How do you progress through Iron Furnaces?

5 parts

Furnace progression here is a ladder: the quest chapter walks you up it tier by tier, and each tier is crafted from an earlier furnace. Most steps also have a matching upgrade item in the mod's recipe set.[3][5]

Starting out

The first upgrade comes early. A quest in Chapter 1 shows you can turn a normal furnace into an Iron Furnace, which smelts faster and can be automated with the cogwheel in the top left of the GUI.[6]

Iron FurnaceMod recipe

Crafting Shaped

Crafting Shaped
any iron ingotany iron ingotany iron ingot
any iron ingotFurnaceany iron ingot
any iron ingotany iron ingotany iron ingot

Recipe id: ironfurnaces:furnaces/iron_furnace

The Iron Furnaces chapter then starts with "Copper Furnace" quest and "Iron Furnace" quest. Either one can be your first upgrade, and the chapter's side quests (wireless heat, the settings linker, the holiday items) unlock after both.[3]

The tier ladder

Speeds below are the cook times given in the pack's quests. 20 ticks equal 1 second.[3]

Which furnace upgrades into which

The early tiers branch, so you have a choice. A Silver Furnace can be made from a Copper or an Iron Furnace, and a Gold Furnace from an Iron or a Silver one. From Gold the path narrows: the Diamond Furnace is only made from a Gold Furnace.[3][5]

After Diamond it splits again. You can go to Emerald or Crystal, and either of them leads to Obsidian, then Netherite. Each step also has a dedicated upgrade item, such as Stone to Copper Furnace Upgrade, Gold to Diamond Furnace Upgrade and Crystal to Obsidian Furnace Upgrade.[3][5]

Diamond FurnaceMod recipe

Crafting Shaped

Crafting Shaped
any diamond gemany diamond gemany diamond gem
any colorless glass blocksany gold furnaceany colorless glass blocks
any diamond gemany diamond gemany diamond gem

Recipe id: ironfurnaces:furnaces/diamond_furnace

Netherite and the modded tiers

The pack changed the Netherite Furnace recipe, and also the Obsidian to Netherite Furnace Upgrade recipe, so check these in-pack versions instead of trusting the mod's defaults. The quest adds that you don't need a Smithing Template, just a lot of Netherite.[3][5]

Netherite FurnaceChanged by the pack

Crafting Shaped

Crafting Shaped
any netherite ingotMagma Creamany netherite ingot
Magma Creamany obsidian furnaceMagma Cream
any netherite ingotany soul fire base blockany netherite ingot

Recipe id: ironfurnaces:furnaces/netherite_furnace

This recipe is changed by the pack.

From there the line continues Netherite, then Allthemodium, then Vibranium, then Unobtainium. The Vibranium quest comes after Allthemodium, and the Unobtainium quest comes after Vibranium. These tiers also have upgrade items like Netherite to Allthemodium Furnace Upgrade, Allthemodium to Vibranium Furnace Upgrade and Vibranium to Unobtainium Furnace Upgrade.[3][5]

Crafting Shaped

Crafting Shaped
any allthemodium storage blockany allthemodium ingotany allthemodium storage block
any allthemodium ingotany netherite furnaceany allthemodium ingot
any allthemodium storage blockany allthemodium ingotany allthemodium storage block

Recipe id: ironfurnaces:furnaces/allthemodium_furnace

Crafting Shaped

Crafting Shaped
any vibranium storage blockany vibranium ingotany vibranium storage block
any vibranium ingotany allthemodium furnaceany vibranium ingot
any vibranium storage blockany vibranium ingotany vibranium storage block

Recipe id: ironfurnaces:furnaces/vibranium_furnace

Crafting Shaped

Crafting Shaped
any unobtainium storage blockany unobtainium ingotany unobtainium storage block
any unobtainium ingotany vibranium furnaceany unobtainium ingot
any unobtainium storage blockany unobtainium ingotany unobtainium storage block

Recipe id: ironfurnaces:furnaces/unobtainium_furnace

The Rainbow Furnace branch

The Rainbow Furnace is a side branch off Netherite. You need 8 Rainbow Plating and a Rainbow Core, and the core's quest unlocks after the Netherite Furnace. It smelts every 20 ticks, but the quest hints that it handles a whole stack of items at once.[3][5]

Watch out: The Rainbow Plating recipe uses eight furnaces: Copper Furnace, Iron Furnace, Silver Furnace, Golden Furnace, Diamond Furnace, Emerald Furnace, Crystal Furnace and Obsidian Furnace. The quest stresses that you need every furnace before Netherite, even the Copper, the Silver and the Crystal. If you skipped a side branch on the way up, you'll need to go back and make it.[3][5]

Two quests sit after it. "Rainbow Generator" quest describes a boost for a Rainbow Furnace running Augment: Generator when the other nine furnaces around it are generating energy too, worth 2kFE a tick more. "Rainbow Coal" quest is about getting Rainbow Coal by blowing up the Rainbow Furnace, which the quest calls coal that lasts forever.[3]

How does Iron Furnaces work with other mods?

3 parts

Iron Furnaces mostly does its own thing in this pack, but the Unobtainium Furnace shows up in recipes that the pack added. They make items from other mods, so keep it in mind once you get that far.[5]

Creative Thruster for Iron Jetpacks

The pack adds its own shaped crafting recipe for the Thruster, shown below. It pulls in items from other mods, including Block of Unobtainium and Block Of Nitro Crystal.[5]

Philosopher's Fuel

Philosopher's Fuel is also crafted with an Unobtainium Furnace. It is a shaped recipe added by the pack, and it combines items from many different mods, so it is a late-game goal.[5]

Tip: Both recipes need an Unobtainium Furnace, so work your way up the furnace chain before you plan these crafts.[5]

General compatibility

The mod's project page says Iron Furnaces should be compatible with most mods, and that it has explicit compatibility with JEI and Project MMO.[1]

The pack's quest text for Augment: Factory says it makes a furnace work like the Smelting Factory from Mekanism, using Energy instead of fuel, and that you can pipe Energy in. That is a comparison, not a recipe link, so don't expect it to change anything about Mekanism itself.[3]

Which All the Mods 10: To the Sky quests use Iron Furnaces?

5 parts

Almost everything for this mod lives in its own quest chapter, "Iron Furnaces". One extra quest sits in "Chapter 1: Starting out". The chapter follows the furnace upgrade line, so you can work through it in the same order you would upgrade your furnaces.[3][6]

Where it starts: Chapter 1

"Smelting iron with iron" quest is the first time you meet the mod. It unlocks after the Easy Ore Duping quest and asks you to hand in an Iron Furnace. The quest notes that these smelt faster and can be set up for automation with the cogwheel in the top left of the GUI.[6]

The Iron Furnaces chapter, in order

  1. Start with "Iron Furnace" quest and "Copper Furnace" quest. Neither has a prerequisite. They ask for an Iron Furnace and a Copper Furnace. The quest text gives the cook times as 160 ticks (8 seconds) for the Iron Furnace and 180 ticks for the Copper Furnace, against 200 ticks for a normal furnace.[3]
  2. Once you have both, several quests open up. "Silver Furnace" quest asks for a Silver Furnace, which smelts at 140 ticks (7 seconds). "Configurations" quest asks for the Furnace Settings Linker, which copies a furnace's input, output and redstone settings to other furnaces. There are also three side quests: the wireless heat quest (a quest in "Iron Furnaces"), the wrapping paper quest (a quest in "Iron Furnaces") and the Halloween quest (a quest in "Iron Furnaces").[3]
  3. "Golden Furnace" quest follows the Iron and Silver Furnace quests and asks for a Golden Furnace, with a cook time of 120 ticks.[3]
  4. "Diamond Furnace" quest comes next and asks for a Diamond Furnace, which takes 80 ticks (4 seconds) per item.[3]
  5. The line then splits in two. "Crystal Furnace" quest asks for a Crystal Furnace and "Emerald Furnace" quest asks for an Emerald Furnace. The quest text gives 40 ticks for both.[3]
  6. "Obsidian Furnace" quest needs either the Crystal or the Emerald Furnace quest done first. It asks for an Obsidian Furnace, which works every 20 ticks.[3]
  7. "Netherite Furnace" quest asks for a Netherite Furnace. The quest text says it smelts an item every 5 ticks.[3]
  8. After the Netherite Furnace, the chapter splits into two tracks, covered below.[3]

After Netherite: two tracks

The first track goes upward through the modded furnaces. "Allthemodium Furnace" quest asks for an Allthemodium Furnace. "Vibranium Furnace" quest follows with a Vibranium Furnace. The last step is "Unobtainium Furnace" quest, which asks for an Unobtainium Furnace. The quest text says this one smelts faster than any other furnace in the pack.[3]

The second track is the Rainbow line. "Rainbow Core" quest unlocks after the Netherite Furnace quest and asks for an Rainbow Core. "Rainbow Plating" quest needs the furnace quests from Copper up to Emerald and Obsidian (everything before Netherite) and asks for 8 Rainbow Plating.[3]

With the Core and the Plating done, "Rainbow Furnace" quest asks for the Rainbow Furnace. Two quests then branch off it. "Rainbow Coal" quest asks for Rainbow Coal. "Rainbow Generator" quest asks you to hand in the Rainbow Furnace plus the Copper, Iron, Silver, Golden, Diamond, Emerald, Crystal, Obsidian and Netherite furnaces. That quest is about a generator boost: the text says the surrounding furnaces, when they run Augment: Generator and are actively making energy, give a working Rainbow Furnace with that augment 2kFE a tick more.[3]

Augment quests

Six augment quests unlock after a quest called "Augments". The sources don't show how you unlock that quest, so check it in your quest book.[3]

Side quests

Sources

  1. Iron Furnaces project page (modrinth) · official mod data
  2. All the Mods 10: To the Sky 1.2.1 mod list · pack file
  3. All the Mods 10: To the Sky 1.2.1 quests: "Iron Furnaces" · pack file
  4. ironfurnaces tooltips and descriptions (English lang file) · official mod data
  5. All the Mods 10: To the Sky 1.2.1 recipe dump: recipes making Iron Furnaces items · pack recipe dump
  6. All the Mods 10: To the Sky 1.2.1 quests: "Chapter 1: Starting out" · pack file
  7. All the Mods 10 1.1 recipe dump: recipes making Iron Furnaces items · pack recipe dump
  8. ironfurnaces tooltips and descriptions (English lang file) · official mod data
Where this guide comes from

Written from what All the Mods 10: To the Sky itself ships: its files and recipes, the in-game guidebooks and the mods' own pages. Every statement links to the source it came from, and the numbers are checked against the pack before publishing.

Guide last verified Oct 17, 2026.

Guides for other versions: 1.6 to 2.1.0 · 1.0 to 1.0.2

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