Iron Furnaces in FTB Evolution 2

Same as in the All the Mods 11 0.8.0-beta guide

Iron Furnaces adds several tiers of furnace, inspired by cpw's Iron Chests mod. If you've ever wished your smelting setup was faster, this mod is for you. This pack includes version 4.4.2.^[1][2]

What it offers

• Much faster smelting than a regular furnace, which is the whole point of the mod.^[1]
• Reconfigurable sides, so you can choose how each face of the furnace behaves.^[1]
• Augments that add smoking and blasting abilities.^[1]
• A top-tier Rainbow Furnace. The project page teases it with the question "Can you craft the Rainbow Furnace and unlock its POWER?"^[1]

The mod is explicitly compatible with JEI and Project MMO, and its authors say it should work with most other mods. That makes it an easy drop-in upgrade for any smelting setup you already have.^[1]

Where it fits in the pack

Unverified The sources I have don't show where Iron Furnaces fits in this pack's progression. As far as I can tell it isn't on the ATM Star path and no quests involve it, so you can pick it up whenever you want faster smelting. The sources also don't give the crafting recipes or tier details for this pack.

Welcome to Iron Furnaces! The idea is simple: you swap the vanilla furnace for tougher ones that smelt faster, then keep upgrading them. A regular furnace takes 200 ticks per smelting operation, and every furnace below is measured against that.^[1][3]

Step 1: Make your first upgraded furnace

The first step up is the Copper Furnace, which takes 180 ticks per operation in this pack. The Iron Furnace is better at 160 ticks. Both are tier 0. These are the values in the pack's config, and they match the mod defaults.^[3][4]

Copper FurnaceMod recipe

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any copper ingot	any copper ingot	any copper ingot
any copper ingot	Furnace	any copper ingot
any copper ingot	any copper ingot	any copper ingot

Recipe id: ironfurnaces:furnaces/copper_furnace

The in-pack recipe for the Copper Furnace.

Iron FurnaceMod recipe

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any iron ingot	any iron ingot	any iron ingot
any iron ingot	Furnace	any iron ingot
any iron ingot	any iron ingot	any iron ingot

Recipe id: ironfurnaces:furnaces/iron_furnace

The Iron Furnace has a second recipe too, shown next.

Iron FurnaceMod recipe

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any iron ingot	any iron ingot	any iron ingot
any colorless glass blocks	any copper furnace	any colorless glass blocks
any iron ingot	any iron ingot	any iron ingot

Recipe id: ironfurnaces:furnaces/iron_furnace2

Step 2: Upgrade instead of rebuilding

You don't have to craft every furnace from scratch. The mod has upgrade items that turn one furnace into the next, such as Stone to Copper Furnace Upgrade and Stone to Iron Furnace Upgrade. There is also Copper to Iron Furnace Upgrade, and the recipes for the iron ones are shown below.^[4][5]

Stone to Iron Furnace UpgradeMod recipe

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any iron ingot	any iron ingot	any iron ingot
any iron ingot	any stone tool material	any iron ingot
any iron ingot	any iron ingot	any iron ingot

Recipe id: ironfurnaces:upgrades/upgrade_iron

Stone to Iron Furnace Upgrade.

Copper to Iron Furnace UpgradeMod recipe

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any iron ingot	any iron ingot	any iron ingot
any colorless glass blocks	any copper ingot	any colorless glass blocks
any iron ingot	any iron ingot	any iron ingot

Recipe id: ironfurnaces:upgrades/upgrade_iron2

Copper to Iron Furnace Upgrade.

Step 3: Climb the tiers

After iron, the next furnaces are faster again. In this pack the Silver Furnace takes 140 ticks and the Golden Furnace takes 120. Both are tier 1. The Diamond Furnace takes 80 ticks and is tier 2.^[3][4]

The upgrade items chain along the same path: Iron to Silver, Iron to Gold, Silver to Gold, Gold to Diamond, and Diamond to Emerald or Crystal.^[5]

• Iron to Silver Furnace Upgrade takes an Iron Furnace to a Silver Furnace.^[5]
• Iron to Gold Furnace Upgrade takes an Iron Furnace to a Golden Furnace.^[5]
• Gold to Diamond Furnace Upgrade takes a Golden Furnace to a Diamond Furnace.^[5]

Finally, add augments

Augments are items you insert into a furnace by right-clicking. Augment: Blasting limits the furnace to blasting recipes and Augment: Smoking limits it to smoking recipes.^[5]

Augment: Fuel Efficiency makes fuel heat the furnace twice as much, at the cost of slowing the cook time by 25% for all recipes. Augment: Speed comes with a downside as well: it uses up twice the amount of fuel.^[5]

Augment: SpeedMod recipe

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any stone	any redstone dust	any stone
Paper	Sugar	Paper
any stone	any redstone dust	any stone

Recipe id: ironfurnaces:augments/augment_speed

The in-pack recipe for the Speed augment.

Iron Furnaces, inspired by cpw's Iron Chests, adds tiers of furnace that smelt faster than the vanilla one. Beyond speed you get reconfigurable sides, augments for smoking and blasting, and power generation. Here is how those systems work in this pack.^[1]

Speed, tiers and power per furnace

Every furnace has a speed setting, which is the number of ticks one smelting operation takes. A regular furnace takes 200 ticks, so lower is faster. Each furnace also has a tier from 0 to 2, and the tier decides how much energy it can store. The pack keeps the mod's default values for all of these.^[3]

• Iron Furnace: tier 0, 160 ticks per smelt, generation setting of 40 RF per tick.^[3][4]
• Copper Furnace: tier 0, 180 ticks per smelt, generation setting of 40 RF per tick.^[3][4]
• Silver Furnace: tier 1, 140 ticks per smelt, generation setting of 100 RF per tick.^[3][4]
• Golden Furnace: tier 1, 120 ticks per smelt, generation setting of 160 RF per tick.^[3][4]
• Diamond Furnace: tier 2, 80 ticks per smelt, generation setting of 240 RF per tick.^[3][4]
• Emerald Furnace: tier 2, 40 ticks per smelt, generation setting of 320 RF per tick.^[3][4]
• Crystal Furnace: tier 2, 40 ticks per smelt, generation setting of 360 RF per tick.^[3][4]
• Obsidian Furnace: tier 2, 20 ticks per smelt, generation setting of 500 RF per tick.^[3][4]
• Netherite Furnace: tier 2, 5 ticks per smelt, generation setting of 1,000 RF per tick.^[3][4]
• Rainbow Furnace: tier 2, 20 ticks per smelt, generation setting of 2,000 RF per tick.^[3][4]

Each furnace has its own speed, tier and generation option in the common config, for example furnaces.iron_furnace.speed, furnaces.iron_furnace.tier and furnaces.iron_furnace.generation.^[3]

Energy storage

Furnace energy buffers depend on tier. Tier 0 furnaces store 80,000 (furnaces.energy.tier_0), tier 1 furnaces store 200,000 (furnaces.energy.tier_1) and tier 2 furnaces store 1,000,000 (furnaces.energy.tier_2).^[3]

The modded-metal furnaces smelt in bulk

The three top furnaces also smelt several items at once. The regular furnace does 1 item per operation. Each of these has a speed, a generation setting and a "mult" option for how many items it handles at once, and all three are tier 2.^[3]

• Allthemodium Furnace: 16 items at once, 5 ticks per operation, generation setting of 2,000 RF per tick.^[3][4]
• Vibranium Furnace: 32 items at once, 3 ticks per operation, generation setting of 3,000 RF per tick.^[3][4]
• Unobtainium Furnace: 64 items at once, 1 tick per operation, generation setting of 5,000 RF per tick.^[3][4]

The options are named like modded_furnaces.unobtainium_furnace.mult and modded_furnaces.unobtainium_furnace.speed.^[3]

Augments

Augments change how a furnace behaves. Right-click with one to insert it into a furnace. Here is what each one does, according to its tooltip.^[5]

• Augment: Speed: halves the cook time for all recipes, but uses up twice the fuel.^[5]
• Augment: Fuel Efficiency: fuel heats the furnace twice as much, but cook time becomes 25% slower for all recipes.^[5]
• Augment: Blasting: only allows blasting recipes.^[5]
• Augment: Smoking: only allows smoking recipes.^[5]
• Augment: Factory: converts the furnace into a factory, which uses power for heat instead of fuel.^[5]
• Augment: Generator: heat from the furnace generates power, but the furnace can no longer smelt items.^[5]
• Augment: Inventory Config: adds configurable sides for item transfer, which is the key to automating a furnace.^[5]

There are also redstone augments with several modes. Right-click in the air to change mode. Redstone Control mode will NOT smelt while it gets a redstone signal. Redstone Inverse Control mode will ONLY smelt while it gets a signal. Comparator mode acts as an internal comparator and outputs its signal to all sides. Comparator Subtraction mode is the same, but lets you set a subtraction strength in the furnace GUI.^[5]

An experience augment decides where smelting XP goes. It either ejects the XP to nearby fluid tanks or gives it to the player who placed the furnace. Sneak and right-click in the air to switch modes.^[5]

Augment: SpeedMod recipe

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any stone	any redstone dust	any stone
Paper	Sugar	Paper
any stone	any redstone dust	any stone

Recipe id: ironfurnaces:augments/augment_speed

Augment: Fuel EfficiencyMod recipe

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any stone	any redstone dust	any stone
Paper	Coal	Paper
any stone	any redstone dust	any stone

Recipe id: ironfurnaces:augments/augment_fuel

Augment: FactoryMod recipe

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any stone	any redstone dust	any stone
Paper	Piston	Paper
any stone	any redstone dust	any stone

Recipe id: ironfurnaces:augments/augment_factory

Wireless heat

Instead of burning fuel you can heat a furnace wirelessly. The Wireless Heat Transmitter block takes Forge Energy and powers every Wireless Heat Receiver bound to it. You bind a receiver by placing it in the transmitter. Then put the receiver in the fuel slot of the furnace. It only works from Iron tier and above.^[5]

Wireless Heat ReceiverMod recipe

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any stone	any redstone dust	any stone
any redstone dust	Comparator	any redstone dust
any stone	any redstone dust	any stone

Recipe id: ironfurnaces:item_heater

The Rainbow Furnace generator

The Rainbow Furnace is the power-generation capstone. Its tooltips list the rules. For power generation, one of each tier of furnace must be an active generator and not have a full buffer. It outputs energy to any side configured as output and does not add energy to the internal buffer. You can only have one Rainbow Generator.^[5]

How much power it generates is set by furnaces.rainbow_furnace.rainbow_generation, which is 50,000 in this pack. That is the mod default.^[3]

Upgrades, XP and light

Upgrade items move a furnace up a tier without rebuilding it, for example Stone to Copper Furnace Upgrade (Stone to Copper) or Gold to Diamond Furnace Upgrade (Gold to Diamond). Sneak and right-click to use one.^[5]

XP stored in recipes inside a furnace is capped by furnaces.recipeMaxXPLevel.level, set to 100 levels here. Anything beyond that is voided, and the config describes 100 levels as 30,971 XP.^[3]

Furnaces still emit light in this pack, because misc.misc.lightupdates is false (true would disable light).^[3]

Iron Furnaces is all about stepping a plain furnace up through better and better tiers. In this pack, each step has its own upgrade item named after the two tiers it connects, so you can read the whole path straight off the item names.^[4]

The upgrade chain

• Early tiers: Stone to Iron Furnace Upgrade takes a Stone furnace to an Iron Furnace, and Stone to Copper Furnace Upgrade takes a Stone furnace to a Copper Furnace. Copper to Iron Furnace Upgrade goes from Copper to Iron.^[4]
• Silver and Gold: Copper to Silver Furnace Upgrade goes from Copper to Silver and Iron to Silver Furnace Upgrade goes from Iron to Silver. Iron to Gold Furnace Upgrade goes from Iron to Gold and Silver to Gold Furnace Upgrade goes from Silver to Gold.^[4]
• Gems: Gold to Diamond Furnace Upgrade takes Gold to Diamond. From Diamond you can branch to Emerald with Diamond to Emerald Furnace Upgrade or to Crystal with Diamond to Crystal Furnace Upgrade.^[4]
• Obsidian: Emerald to Obsidian Furnace Upgrade goes from Emerald to Obsidian, and Crystal to Obsidian Furnace Upgrade goes from Crystal to Obsidian. Both end at the Obsidian Furnace.^[4]
• Netherite and beyond: Obsidian to Netherite Furnace Upgrade goes from Obsidian to Netherite. Then Netherite to Allthemodium Furnace Upgrade goes from Netherite to Allthemodium, Allthemodium to Vibranium Furnace Upgrade goes from Allthemodium to Vibranium, and Vibranium to Unobtainium Furnace Upgrade goes from Vibranium to Unobtainium.^[4]

The path is not a single straight line. Iron can be reached from Stone or from Copper, Silver from Copper or Iron, and Gold from Iron or Silver. After Diamond the path splits into Emerald or Crystal, and both meet again at Obsidian.^[4]

Stone to Iron Furnace UpgradeMod recipe

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any iron ingot	any iron ingot	any iron ingot
any iron ingot	any stone tool material	any iron ingot
any iron ingot	any iron ingot	any iron ingot

Recipe id: ironfurnaces:upgrades/upgrade_iron

The Stone to Iron step, the first upgrade on the chain.

Obsidian to Netherite Furnace UpgradeMod recipe

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Netherite Ingot	Magma Cream	Netherite Ingot
Magma Cream	any obsidian	Magma Cream
Netherite Ingot	any soul fire base block	Netherite Ingot

Recipe id: ironfurnaces:upgrades/upgrade_netherite

The Obsidian to Netherite step, where the chain moves into the Netherite tiers.

Crafting the furnaces directly

Every furnace tier also has its own crafting recipe. The Iron, Golden, Silver and Obsidian furnaces each have a second recipe as well, so there is more than one way to craft those tiers.^[4]

Vibranium FurnaceMod recipe

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any aeternium storage block	any aeternium ingot	any aeternium storage block
any aeternium ingot	any allthemodium furnace	any aeternium ingot
any aeternium storage block	any aeternium ingot	any aeternium storage block

Recipe id: ironfurnaces:furnaces/vibranium_furnace

The Vibranium Furnace recipe as it is in this pack.

The mod also ships an item tag called netherite_upgrade_crafting that lists Netherite Scrap and Netherite Ingot.^[6]

The Rainbow Furnace

The Rainbow Furnace has its own crafting recipe. The Rainbow Core and Rainbow Plating each have recipes too, and one Rainbow Plating craft makes 8 plates.^[4]

Rainbow FurnaceMod recipe

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Rainbow Plating	Rainbow Plating	Rainbow Plating
Rainbow Plating	Rainbow Core	Rainbow Plating
Rainbow Plating	Rainbow Plating	Rainbow Plating

Recipe id: ironfurnaces:furnaces/million_furnace

The Rainbow Furnace recipe as it is in this pack.

Rainbow CoreMod recipe

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Red Stained Glass	Orange Stained Glass	Yellow Stained Glass
Netherite Furnace	Green Stained Glass	Netherite Furnace
Blue Stained Glass	Purple Stained Glass	Magenta Stained Glass

Recipe id: ironfurnaces:rainbow_core

Augments

Alongside the tiers, the mod has a set of augments you can craft: Augment: Blasting, Augment: Smoking, Augment: Factory, Augment: Fuel Efficiency and Augment: Speed.^[4]

Same as in the FTB Skies 2 1.22.0 guide

Good news first: every Iron Furnaces option in this pack's common config sits at the mod's default value. The pack changes nothing in this file, so the numbers below are the mod's own numbers, and nothing here is a pack tweak.^[17]

Smelting speed

Each furnace has a speed option, which is the number of ticks for one smelting operation. Lower is faster.^[17]

• furnaces.iron_furnace.speed is 160 ticks (a regular furnace takes 200).^[17]
• furnaces.copper_furnace.speed is 180 ticks.^[17]
• furnaces.silver_furnace.speed is 140 ticks.^[17]
• furnaces.gold_furnace.speed is 120 ticks.^[17]
• furnaces.diamond_furnace.speed is 80 ticks.^[17]
• furnaces.emerald_furnace.speed is 40 ticks.^[17]
• furnaces.crystal_furnace.speed is 40 ticks.^[17]
• furnaces.obsidian_furnace.speed is 20 ticks.^[17]
• furnaces.rainbow_furnace.speed is 20 ticks.^[17]
• furnaces.netherite_furnace.speed is just 5 ticks.^[17]

Furnace tiers

Each furnace also has a tier option, which sets what tier that furnace is. The tier decides which energy storage option applies to it.^[17]

• furnaces.iron_furnace.tier is 0.^[17]
• furnaces.copper_furnace.tier is 0.^[17]
• furnaces.silver_furnace.tier is 1.^[17]
• furnaces.gold_furnace.tier is 1.^[17]
• furnaces.diamond_furnace.tier is 2.^[17]
• furnaces.emerald_furnace.tier is 2.^[17]
• furnaces.crystal_furnace.tier is 2.^[17]
• furnaces.obsidian_furnace.tier is 2.^[17]
• furnaces.netherite_furnace.tier is 2.^[17]
• furnaces.million_furnace.tier is 2.^[17]

Energy storage

• furnaces.energy.tier_0 is 80,000, the energy tier 0 furnaces can store.^[17]
• furnaces.energy.tier_1 is 200,000 for tier 1 furnaces.^[17]
• furnaces.energy.tier_2 is 1,000,000 for tier 2 furnaces.^[17]

Energy generation

Each furnace also has a generation option, the RF it generates per tick.^[17]

• furnaces.iron_furnace.generation is 40.^[17]
• furnaces.copper_furnace.generation is 40.^[17]
• furnaces.silver_furnace.generation is 100.^[17]
• furnaces.gold_furnace.generation is 160.^[17]
• furnaces.diamond_furnace.generation is 240.^[17]
• furnaces.emerald_furnace.generation is 320.^[17]
• furnaces.crystal_furnace.generation is 360.^[17]
• furnaces.obsidian_furnace.generation is 500.^[17]
• furnaces.netherite_furnace.generation is 1,000.^[17]
• furnaces.rainbow_furnace.generation is 2,000.^[17]
• furnaces.rainbow_furnace.rainbow_generation is 50,000. The config describes it as how much power the Rainbow Furnace will generate.^[17]

Modded furnaces

The Allthemodium, Vibranium and Unobtainium furnaces live in their own config section. On top of speed and generation they have a mult option, the number of items smelted at once.^[17]

• modded_furnaces.allthemodium_furnace.speed is 5 ticks.^[17]
• modded_furnaces.allthemodium_furnace.mult is 16 items at once (a regular furnace smelts 1).^[17]
• modded_furnaces.allthemodium_furnace.generation is 2,000 RF per tick.^[17]
• modded_furnaces.vibranium_furnace.speed is 3 ticks.^[17]
• modded_furnaces.vibranium_furnace.mult is 32 items at once.^[17]
• modded_furnaces.vibranium_furnace.generation is 3,000 RF per tick.^[17]
• modded_furnaces.unobtainium_furnace.speed is 1 tick.^[17]
• modded_furnaces.unobtainium_furnace.mult is 64 items at once.^[17]
• modded_furnaces.unobtainium_furnace.generation is 5,000 RF per tick.^[17]

Other options

furnaces.recipeMaxXPLevel.level is 100. That is the number of experience levels a furnace can store in a recipe before the excess is voided, and the config notes that 100 levels is 30,971 XP.^[17]