Iron Furnaces in FTB Skies 2: Aero

Iron Furnaces adds several tiers of furnace, inspired by cpw's Iron Chests mod. The idea is the same: take something basic and give you upgraded versions of it.^[1]

The project page sums up the pitch as smelting with more speed, reconfigurable sides, and augments for smoking and blasting. If you want to push it to the top, the page teases the Rainbow Furnace as the one to craft.^[1]

In this pack

The pack ships Iron Furnaces 4.3.2, built for NeoForge on Minecraft 1.21.1. It has been in the pack since 1.0.3 or earlier, so it is a long-standing part of the mod list.^[2]

The mod lists explicit compatibility with JEI and Project MMO, and the project page says it should work with most other mods.^[1]

Quest book placement

Unverified The sources here do not show a quest chapter, group or position for Iron Furnaces in this pack's quest book, and they do not show whether the ATM Star path uses it. Check the quest book in game for any placement.

Iron Furnaces adds several tiers of furnace, and the better ones smelt much faster than a regular furnace. The plan is simple: make a better furnace, move up the tiers as you find materials, then tune the furnace with augments.^[1][3]

Step 1: Make an Iron Furnace

Your first target is the Iron Furnace. The pack changed this recipe, so use the exact version below rather than relying on memory of the mod.^[4]

Iron FurnaceChanged by the pack

Crafting Shaped

Crafting Shaped

Iron Ingot	Iron Ingot	Iron Ingot
Iron Ingot	Furnace	Iron Ingot
Iron Ingot	Iron Ingot	Iron Ingot

Recipe id: ironfurnaces:furnaces/iron_furnace

A regular furnace takes 200 ticks per smelting operation. The Iron Furnace takes 160 in this pack (furnaces.iron_furnace.speed), which matches the mod default. It is tier 0, set by furnaces.iron_furnace.tier.^[3]

Step 2: The copper route

You can also start one step lower with the Copper Furnace, which the pack has changed too. It takes 180 ticks per operation (furnaces.copper_furnace.speed) and its tier is 0 (furnaces.copper_furnace.tier).^[3][4]

Copper FurnaceChanged by the pack

Crafting Shaped

Crafting Shaped

Copper Ingot	Copper Ingot	Copper Ingot
Copper Ingot	Furnace	Copper Ingot
Copper Ingot	Copper Ingot	Copper Ingot

Recipe id: ironfurnaces:furnaces/copper_furnace

From a Copper Furnace you can make an Iron Furnace with this pack-changed recipe:^[4]

Iron FurnaceChanged by the pack

Crafting Shaped

Crafting Shaped

Iron Ingot	Iron Ingot	Iron Ingot
any colorless glass blocks	any copper furnace	any colorless glass blocks
Iron Ingot	Iron Ingot	Iron Ingot

Recipe id: ironfurnaces:furnaces/iron_furnace2

There are also upgrade items named for each step, such as Stone to Iron Furnace Upgrade (Stone to Iron) and Stone to Copper Furnace Upgrade (Stone to Copper). The pack changed both recipes.^[4][5]

Stone to Iron Furnace UpgradeChanged by the pack

Crafting Shaped

Crafting Shaped

Iron Ingot	Iron Ingot	Iron Ingot
Iron Ingot	any stone tool material	Iron Ingot
Iron Ingot	Iron Ingot	Iron Ingot

Recipe id: ironfurnaces:upgrades/upgrade_iron

Step 3: Move up the tiers

The next furnaces are the Silver Furnace and the Golden Furnace. Both are tier 1 in the pack config. Silver takes 140 ticks per operation and gold takes 120, so each step is faster than the last.^[3][4]

Silver FurnaceChanged by the pack

Crafting Shaped

Crafting Shaped

Silver Ingot	any colorless glass blocks	Silver Ingot
any colorless glass blocks	any iron furnace	any colorless glass blocks
Silver Ingot	any colorless glass blocks	Silver Ingot

Recipe id: ironfurnaces:furnaces/silver_furnace

Golden FurnaceChanged by the pack

Crafting Shaped

Crafting Shaped

Gold Ingot	Gold Ingot	Gold Ingot
Gold Ingot	any iron furnace	Gold Ingot
Gold Ingot	Gold Block	Gold Ingot

Recipe id: ironfurnaces:furnaces/gold_furnace

After gold come the Diamond, Emerald, Crystal, Obsidian, Netherite and Rainbow furnaces. Those can wait until you have the materials for them.^[3][4]

Finally, add augments

Once you have a furnace you like, augments tune it. Right-click with an augment to insert it. Augment: Speed halves the cooktime for all recipes.^[5]

Augment: SpeedChanged by the pack

Crafting Shaped

Crafting Shaped

any stone	Redstone	any stone
Paper	Sugar	Paper
any stone	Redstone	any stone

Recipe id: ironfurnaces:augments/augment_speed

Augment: Blasting and Augment: Smoking restrict a furnace to blasting-only or smoking-only recipes. The pack changed the recipes for both of these.^[4][5]

Iron Furnaces adds several tiers of furnace with faster smelting, reconfigurable sides and augments that change how a furnace behaves. The top of the ladder is the Rainbow Furnace.^[1]

Speed and power by furnace

Every furnace has a speed, which is the number of ticks it needs for one smelting operation. A regular furnace takes 200 ticks. Every furnace also has a generation value, which is how much RF per tick it makes. This pack leaves all of these values at the mod defaults.^[3]

• Copper Furnace: 180 ticks per operation, 40 RF/tick generation. Set in furnaces.copper_furnace.speed and furnaces.copper_furnace.generation.^[3][4]
• Iron Furnace: 160 ticks, 40 RF/tick.^[3][4]
• Silver Furnace: 140 ticks, 100 RF/tick.^[3][4]
• Golden Furnace: 120 ticks, 160 RF/tick.^[3][4]
• Diamond Furnace: 80 ticks, 240 RF/tick.^[3][4]
• Emerald Furnace: 40 ticks, 320 RF/tick.^[3][4]
• Crystal Furnace: 40 ticks, 360 RF/tick.^[3][4]
• Obsidian Furnace: 20 ticks, 500 RF/tick.^[3][4]
• Netherite Furnace: 5 ticks, 1,000 RF/tick.^[3][4]
• Rainbow Furnace (the Rainbow Furnace): 20 ticks, 2,000 RF/tick.^[3]

Tiers and energy storage

Each furnace is assigned a tier from 0 to 2. Copper and Iron are tier 0, Silver and Gold are tier 1, and Diamond, Emerald, Crystal, Obsidian, Netherite and Rainbow are tier 2. The energy a furnace can store depends on its tier: 80,000 for tier 0, 200,000 for tier 1 and 1,000,000 for tier 2. Those caps are set in furnaces.energy.tier_0, furnaces.energy.tier_1 and furnaces.energy.tier_2.^[3]

Upgrading furnaces

Furnace upgrade items are named for the swap they do. Sneak and right-click a furnace with the upgrade to upgrade it. Examples are Copper to Silver Furnace Upgrade (Copper to Silver) and Silver to Gold Furnace Upgrade (Silver to Gold).^[5]

The pack changed several furnace and upgrade recipes, so don't trust other guides for them. Here are the Iron and Silver Furnace recipes as they are in this pack.^[4]

Iron FurnaceChanged by the pack

Crafting Shaped

Crafting Shaped

Iron Ingot	Iron Ingot	Iron Ingot
Iron Ingot	Furnace	Iron Ingot
Iron Ingot	Iron Ingot	Iron Ingot

Recipe id: ironfurnaces:furnaces/iron_furnace

Silver FurnaceChanged by the pack

Crafting Shaped

Crafting Shaped

Silver Ingot	any colorless glass blocks	Silver Ingot
any colorless glass blocks	any iron furnace	any colorless glass blocks
Silver Ingot	any colorless glass blocks	Silver Ingot

Recipe id: ironfurnaces:furnaces/silver_furnace

Augments

Augments change how a furnace behaves. Right-click to insert one. Some of them trade something away for their benefit, so read the tooltips.^[5]

• Augment: Speed halves the cooktime for all recipes, but uses twice the fuel.^[5]
• Augment: Fuel Efficiency makes fuel heat the furnace twice as much, but slows the cooktime by 25% for all recipes.^[5]
• Augment: Generator makes the heat from the furnace generate power, but the furnace can no longer smelt items.^[5]
• Augment: Factory converts the furnace into a factory that uses power for heat instead of fuel.^[5]
• Augment: Blasting only allows blasting recipes, and Augment: Smoking only allows smoking recipes.^[5]
• Augment: Inventory Config adds configurable sides for item transfer.^[5]

The pack changed the recipes for the Fuel Efficiency, Factory, Blasting and Smoking augments. This is the Factory one.^[4]

Augment: FactoryChanged by the pack

Crafting Shaped

Crafting Shaped

any stone	Redstone	any stone
Paper	Piston	Paper
any stone	Redstone	any stone

Recipe id: ironfurnaces:augments/augment_factory

Redstone and experience

A redstone augment has several modes, and you right-click in the air to change mode. Redstone Control mode will NOT smelt while it receives a redstone signal. Redstone Inverse Control mode will ONLY smelt while it receives one. Comparator mode acts as an internal comparator and outputs the signal to all sides. Comparator Subtraction mode is the same, but the signal strength to subtract is set in the furnace GUI.^[5]

An experience augment has two modes. In one, experience from smelting is ejected to nearby fluid tanks. In the other, it is given to the player that placed the furnace. Sneak and right-click in the air to switch between them. Experience stored in a recipe is voided once it reaches the level set in furnaces.recipeMaxXPLevel.level, which is 100 levels (30,971 XP) here.^[3][5]

Wireless heat

The Wireless Heat Transmitter is a block. Give it Forge Energy and it powers every Wireless Heat Receiver bound to it. You bind a receiver by placing it in the transmitter. To use a receiver, put it in the fuel slot of a furnace. Its tooltip says it only works from Iron tier and above.^[5]

The Rainbow Furnace

The Rainbow Furnace works differently from the other furnaces. According to its tooltips, one of each tier of furnace must be an active generator without a full buffer for it to generate power. It outputs energy to any side configured as output and does not add energy to its internal buffer. You can only have one Rainbow Generator.^[5]

It has its own value, furnaces.rainbow_furnace.rainbow_generation, set to 50,000 and described as how much power the Rainbow Furnace will generate. That matches the mod default. Its tooltip also mentions RF/tick when all other furnaces are generating power.^[3][5]

Crafting it takes a Rainbow Core and Rainbow Plating. The pack changed the plating recipe.^[4]

Rainbow FurnaceMod recipe

Crafting Shaped

Crafting Shaped

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

Recipe id: ironfurnaces:furnaces/million_furnace

8× Rainbow PlatingChanged by the pack

Crafting Shapeless

• Iron Furnace
• Golden Furnace
• Diamond Furnace
• Emerald Furnace
• Obsidian Furnace
• Crystal Furnace
• Copper Furnace
• Silver Furnace

Recipe id: ironfurnaces:rainbow_plating

The pack changed this recipe from the mod's own.

Furnaces this pack removes

The mod also has Allthemodium, Vibranium and Unobtainium furnaces, with config entries under modded_furnaces. In this pack, a server script removes those furnaces' recipes and the matching upgrade recipes, and hides the items from recipe viewers. Don't plan around them.^[3][6]

Small settings

In this pack misc.misc.lightupdates is false, so furnaces still emit light. Setting it to true stops them emitting light.^[3]

In this pack, Iron Furnaces is a ladder of furnace tiers. Each tier is built on a furnace from the tier before it, and most steps also have an upgrade item. Many of the recipes have been changed by the pack, so don't rely on what you remember from other modpacks.^[4]

The tier ladder

• Copper Furnace and Iron Furnace are the entry tiers. The pack changed both recipes, and the Iron Furnace can be made either from a plain furnace or from a Copper Furnace.^[4]
• Silver Furnace can be made from a Copper Furnace or from an Iron Furnace. The pack changed both recipes, and both use Silver Ingots.^[4]
• Golden Furnace can be built from an Iron Furnace or from a Silver Furnace. Both recipes are pack changes.^[4]
• Diamond Furnace is built from a Golden Furnace, and the pack changed this recipe too.^[4]
• From the Diamond Furnace the path splits: Emerald Furnace (a pack-changed recipe) or Crystal Furnace (the mod's own recipe).^[4]
• Obsidian Furnace can be made from an Emerald Furnace or from a Crystal Furnace. Both use the mod's own recipes.^[4]
• Netherite Furnace is built from an Obsidian Furnace, using the mod's own recipe.^[4]
• Rainbow Furnace (the Rainbow Furnace) is crafted from a Rainbow Core and Rainbow Plating, and it sits above the Netherite Furnace.^[4]

Early tiers: Copper, Iron and Silver

Copper FurnaceChanged by the pack

Crafting Shaped

Crafting Shaped

Copper Ingot	Copper Ingot	Copper Ingot
Copper Ingot	Furnace	Copper Ingot
Copper Ingot	Copper Ingot	Copper Ingot

Recipe id: ironfurnaces:furnaces/copper_furnace

Changed by the pack.

Iron FurnaceChanged by the pack

Crafting Shaped

Crafting Shaped

Iron Ingot	Iron Ingot	Iron Ingot
Iron Ingot	Furnace	Iron Ingot
Iron Ingot	Iron Ingot	Iron Ingot

Recipe id: ironfurnaces:furnaces/iron_furnace

Changed by the pack.

Iron FurnaceChanged by the pack

Crafting Shaped

Crafting Shaped

Iron Ingot	Iron Ingot	Iron Ingot
any colorless glass blocks	any copper furnace	any colorless glass blocks
Iron Ingot	Iron Ingot	Iron Ingot

Recipe id: ironfurnaces:furnaces/iron_furnace2

The alternative route from a Copper Furnace, also changed by the pack.

Silver FurnaceChanged by the pack

Crafting Shaped

Crafting Shaped

Silver Ingot	Silver Ingot	Silver Ingot
Silver Ingot	any copper furnace	Silver Ingot
Silver Ingot	Silver Ingot	Silver Ingot

Recipe id: ironfurnaces:furnaces/silver_furnace2

Silver from a Copper Furnace, changed by the pack.

Silver FurnaceChanged by the pack

Crafting Shaped

Crafting Shaped

Silver Ingot	any colorless glass blocks	Silver Ingot
any colorless glass blocks	any iron furnace	any colorless glass blocks
Silver Ingot	any colorless glass blocks	Silver Ingot

Recipe id: ironfurnaces:furnaces/silver_furnace

Silver from an Iron Furnace, changed by the pack.

Gold, Diamond, Emerald and Crystal

Golden FurnaceChanged by the pack

Crafting Shaped

Crafting Shaped

Gold Ingot	Gold Ingot	Gold Ingot
Gold Ingot	any iron furnace	Gold Ingot
Gold Ingot	Gold Block	Gold Ingot

Recipe id: ironfurnaces:furnaces/gold_furnace

Gold from an Iron Furnace, changed by the pack.

Golden FurnaceChanged by the pack

Crafting Shaped

Crafting Shaped

any colorless glass blocks	any colorless glass blocks	any colorless glass blocks
any colorless glass blocks	any silver furnace	any colorless glass blocks
any colorless glass blocks	Gold Block	any colorless glass blocks

Recipe id: ironfurnaces:furnaces/gold_furnace2

Gold from a Silver Furnace, changed by the pack.

Diamond FurnaceChanged by the pack

Crafting Shaped

Crafting Shaped

Diamond	Diamond	Diamond
any colorless glass blocks	any gold furnace	any colorless glass blocks
Diamond	Diamond	Diamond

Recipe id: ironfurnaces:furnaces/diamond_furnace

Emerald FurnaceChanged by the pack

Crafting Shaped

Crafting Shaped

Emerald	Emerald	Emerald
Emerald	any diamond furnace	Emerald
Emerald	Emerald	Emerald

Recipe id: ironfurnaces:furnaces/emerald_furnace

Crystal FurnaceMod recipe

Crafting Shaped

Crafting Shaped

any colorless glass blocks	any colorless glass blocks	any colorless glass blocks
any colorless glass blocks	any diamond furnace	any colorless glass blocks
any colorless glass blocks	Ender Eye	any colorless glass blocks

Recipe id: ironfurnaces:furnaces/crystal_furnace

Obsidian, Netherite and Rainbow

Obsidian FurnaceMod recipe

Crafting Shaped

Crafting Shaped

any obsidian	any blaze rod	any obsidian
any blaze rod	any emerald furnace	any blaze rod
any obsidian	any blaze rod	any obsidian

Recipe id: ironfurnaces:furnaces/obsidian_furnace

Obsidian from an Emerald Furnace, the mod's own recipe.

Obsidian FurnaceMod recipe

Crafting Shaped

Crafting Shaped

any obsidian	any blaze rod	any obsidian
any blaze rod	any crystal furnace	any blaze rod
any obsidian	any blaze rod	any obsidian

Recipe id: ironfurnaces:furnaces/obsidian_furnace2

Obsidian from a Crystal Furnace, the mod's own recipe.

Netherite FurnaceMod recipe

Crafting Shaped

Crafting Shaped

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

Recipe id: ironfurnaces:furnaces/netherite_furnace

The Rainbow Furnace is crafted from a Rainbow Core and Rainbow Plating. The core is built around a Netherite Furnace. The plating recipe is changed by the pack: it takes a Copper, Crystal, Diamond, Emerald, Golden, Iron, Obsidian and Silver Furnace (Netherite goes into the core instead) and makes 8 Rainbow Plating.^[4]

Rainbow CoreMod recipe

Crafting Shaped

Crafting Shaped

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

8× Rainbow PlatingChanged by the pack

Crafting Shapeless

• Iron Furnace
• Golden Furnace
• Diamond Furnace
• Emerald Furnace
• Obsidian Furnace
• Crystal Furnace
• Copper Furnace
• Silver Furnace

Recipe id: ironfurnaces:rainbow_plating

Rainbow FurnaceMod recipe

Crafting Shaped

Crafting Shaped

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

Recipe id: ironfurnaces:furnaces/million_furnace

Upgrade items

If you'd rather upgrade a furnace than craft a new one, there are upgrade items for most of the steps: Stone to Copper Furnace Upgrade, Copper to Iron Furnace Upgrade, Copper to Silver Furnace Upgrade, Iron to Gold Furnace Upgrade, Gold to Diamond Furnace Upgrade, Diamond to Emerald Furnace Upgrade and Diamond to Crystal Furnace Upgrade. The Obsidian step has an upgrade from Emerald (Emerald to Obsidian Furnace Upgrade) and one from Crystal (Crystal to Obsidian Furnace Upgrade), and Obsidian to Netherite Furnace Upgrade covers the Netherite step. The recipe blocks below show a few of them.^[4]

Stone to Copper Furnace UpgradeChanged by the pack

Crafting Shaped

Crafting Shaped

Copper Ingot	Copper Ingot	Copper Ingot
Copper Ingot	any stone tool material	Copper Ingot
Copper Ingot	Copper Ingot	Copper Ingot

Recipe id: ironfurnaces:upgrades/upgrade_copper

Changed by the pack.

Gold to Diamond Furnace UpgradeChanged by the pack

Crafting Shaped

Crafting Shaped

Diamond	Diamond	Diamond
any colorless glass blocks	Gold Ingot	any colorless glass blocks
Diamond	Diamond	Diamond

Recipe id: ironfurnaces:upgrades/upgrade_diamond

Changed by the pack.

Obsidian to Netherite Furnace UpgradeMod recipe

Crafting Shaped

Crafting Shaped

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 mod's own recipe.

Diamond to Crystal Furnace UpgradeChanged by the pack

Crafting Shaped

Crafting Shaped

any colorless glass blocks	any colorless glass blocks	any colorless glass blocks
any colorless glass blocks	Diamond	any colorless glass blocks
any colorless glass blocks	Ender Eye	any colorless glass blocks

Recipe id: ironfurnaces:upgrades/upgrade_crystal

Changed by the pack.

Augments

The pack changed the recipes of all the augments: Augment: Speed, Augment: Fuel Efficiency, Augment: Blasting, Augment: Smoking and Augment: Factory. Their in-pack recipes are shown below.^[4]

Augment: SpeedChanged by the pack

Crafting Shaped

Crafting Shaped

any stone	Redstone	any stone
Paper	Sugar	Paper
any stone	Redstone	any stone

Recipe id: ironfurnaces:augments/augment_speed

Changed by the pack.

Augment: Fuel EfficiencyChanged by the pack

Crafting Shaped

Crafting Shaped

any stone	Redstone	any stone
Paper	Coal	Paper
any stone	Redstone	any stone

Recipe id: ironfurnaces:augments/augment_fuel

Changed by the pack.

Augment: BlastingChanged by the pack

Crafting Shaped

Crafting Shaped

any stone	Redstone	any stone
Paper	Blast Furnace	Paper
any stone	Redstone	any stone

Recipe id: ironfurnaces:augments/augment_blasting

Changed by the pack.

Augment: SmokingChanged by the pack

Crafting Shaped

Crafting Shaped

any stone	Redstone	any stone
Paper	Smoker	Paper
any stone	Redstone	any stone

Recipe id: ironfurnaces:augments/augment_smoking

Changed by the pack.

Augment: FactoryChanged by the pack

Crafting Shaped

Crafting Shaped

any stone	Redstone	any stone
Paper	Piston	Paper
any stone	Redstone	any stone

Recipe id: ironfurnaces:augments/augment_factory

Changed by the pack.

Iron Furnaces connects to the rest of the pack mostly through its recipes. The pack rewrote several of them to use a silver ingot from another mod, and one Iron Furnaces item is also an ingredient in a talisman recipe.^[4]

Silver recipes use FTB Materials silver

The pack changed the recipes for the Silver Furnace so they use Silver Ingot. You can make it from an iron furnace plus colorless glass, or from a copper furnace. Either way, you need that silver ingot.^[4]

Silver FurnaceChanged by the pack

Crafting Shaped

Crafting Shaped

Silver Ingot	any colorless glass blocks	Silver Ingot
any colorless glass blocks	any iron furnace	any colorless glass blocks
Silver Ingot	any colorless glass blocks	Silver Ingot

Recipe id: ironfurnaces:furnaces/silver_furnace

Silver Furnace from an iron furnace, changed by the pack.

Silver FurnaceChanged by the pack

Crafting Shaped

Crafting Shaped

Silver Ingot	Silver Ingot	Silver Ingot
Silver Ingot	any copper furnace	Silver Ingot
Silver Ingot	Silver Ingot	Silver Ingot

Recipe id: ironfurnaces:furnaces/silver_furnace2

Silver Furnace from a copper furnace, changed by the pack.

The silver-related upgrades are changed by the pack as well. The Copper to Silver Furnace Upgrade, Iron to Silver Furnace Upgrade and Silver to Gold Furnace Upgrade all take silver ingots.^[4]

Copper to Silver Furnace UpgradeChanged by the pack

Crafting Shaped

Crafting Shaped

Silver Ingot	Silver Ingot	Silver Ingot
Silver Ingot	any stone tool material	Silver Ingot
Silver Ingot	Copper Ingot	Silver Ingot

Recipe id: ironfurnaces:upgrades/upgrade_silver

Copper to Silver upgrade, changed by the pack.

Iron to Silver Furnace UpgradeChanged by the pack

Crafting Shaped

Crafting Shaped

Silver Ingot	any colorless glass blocks	Silver Ingot
any colorless glass blocks	Iron Ingot	any colorless glass blocks
Silver Ingot	any colorless glass blocks	Silver Ingot

Recipe id: ironfurnaces:upgrades/upgrade_silver2

Iron to Silver upgrade, changed by the pack.

Silver to Gold Furnace UpgradeChanged by the pack

Crafting Shaped

Crafting Shaped

Gold Ingot	Gold Ingot	Gold Ingot
Gold Ingot	Silver Ingot	Gold Ingot
Gold Ingot	Gold Block	Gold Ingot

Recipe id: ironfurnaces:upgrades/upgrade_gold2

Silver to Gold upgrade, changed by the pack.

Rainbow Plating in the horseshoe balloon bundle

Rainbow Plating is also an ingredient in the Bundle of Horseshoe Balloons. The pack added recipes for that bundle in several machines, and each one also uses Amber Horseshoe Balloon and 1,000 Quantum Infusion. You can make it in an Advanced AE reaction chamber, in a Modern Industrialization mixer, or through a Modern Industrialization FTB constructor reaction recipe.^[4]

Bundle of Horseshoe BalloonsAdded by the pack

Reaction (advanced_ae)

• 1000× Quantum Infusion
• Amber Horseshoe Balloon
• Rainbow Plating

Recipe id: ftb:compat/fargostalismans/advanced_ae/reaction_chamber/bundle_of_horseshoe_ballons

Advanced AE reaction chamber, added by the pack.

Bundle of Horseshoe BalloonsAdded by the pack

Mixer (modern_industrialization)

• 1000× Quantum Infusion
• Amber Horseshoe Balloon
• Rainbow Plating

Recipe id: ftb:compat/fargostalismans/modern_industrialization/mixer/bundle_of_horseshoe_balloons

Modern Industrialization mixer, added by the pack.

Bundle of Horseshoe BalloonsAdded by the pack

Ftb Constructor (modern_industrialization)

• 1000× Quantum Infusion
• Amber Horseshoe Balloon
• Rainbow Plating

Recipe id: ftb:modern_industrialization/ftb_constructor/reaction/fargostalismans/reaction_chamber/bundle_of_horseshoe_ballons

Modern Industrialization FTB constructor reaction, added by the pack.

Removed furnaces and upgrades

A pack script removes the recipes for the Allthemodium Furnace, Vibranium Furnace and Unobtainium Furnace. It does the same for their upgrades: Netherite to Allthemodium Furnace Upgrade, Allthemodium to Vibranium Furnace Upgrade and Vibranium to Unobtainium Furnace Upgrade. It also strips their tags and hides them from recipe viewers, so don't expect to find or craft them in this pack.^[6]

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.^[7]

Smelting speed

Each furnace has a speed option, which is the number of ticks for one smelting operation. Lower is faster.^[7]

• furnaces.iron_furnace.speed is 160 ticks (a regular furnace takes 200).^[7]
• furnaces.copper_furnace.speed is 180 ticks.^[7]
• furnaces.silver_furnace.speed is 140 ticks.^[7]
• furnaces.gold_furnace.speed is 120 ticks.^[7]
• furnaces.diamond_furnace.speed is 80 ticks.^[7]
• furnaces.emerald_furnace.speed is 40 ticks.^[7]
• furnaces.crystal_furnace.speed is 40 ticks.^[7]
• furnaces.obsidian_furnace.speed is 20 ticks.^[7]
• furnaces.rainbow_furnace.speed is 20 ticks.^[7]
• furnaces.netherite_furnace.speed is just 5 ticks.^[7]

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.^[7]

• furnaces.iron_furnace.tier is 0.^[7]
• furnaces.copper_furnace.tier is 0.^[7]
• furnaces.silver_furnace.tier is 1.^[7]
• furnaces.gold_furnace.tier is 1.^[7]
• furnaces.diamond_furnace.tier is 2.^[7]
• furnaces.emerald_furnace.tier is 2.^[7]
• furnaces.crystal_furnace.tier is 2.^[7]
• furnaces.obsidian_furnace.tier is 2.^[7]
• furnaces.netherite_furnace.tier is 2.^[7]
• furnaces.million_furnace.tier is 2.^[7]

Energy storage

• furnaces.energy.tier_0 is 80,000, the energy tier 0 furnaces can store.^[7]
• furnaces.energy.tier_1 is 200,000 for tier 1 furnaces.^[7]
• furnaces.energy.tier_2 is 1,000,000 for tier 2 furnaces.^[7]

Energy generation

Each furnace also has a generation option, the RF it generates per tick.^[7]

• furnaces.iron_furnace.generation is 40.^[7]
• furnaces.copper_furnace.generation is 40.^[7]
• furnaces.silver_furnace.generation is 100.^[7]
• furnaces.gold_furnace.generation is 160.^[7]
• furnaces.diamond_furnace.generation is 240.^[7]
• furnaces.emerald_furnace.generation is 320.^[7]
• furnaces.crystal_furnace.generation is 360.^[7]
• furnaces.obsidian_furnace.generation is 500.^[7]
• furnaces.netherite_furnace.generation is 1,000.^[7]
• furnaces.rainbow_furnace.generation is 2,000.^[7]
• furnaces.rainbow_furnace.rainbow_generation is 50,000. The config describes it as how much power the Rainbow Furnace will generate.^[7]

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.^[7]

• modded_furnaces.allthemodium_furnace.speed is 5 ticks.^[7]
• modded_furnaces.allthemodium_furnace.mult is 16 items at once (a regular furnace smelts 1).^[7]
• modded_furnaces.allthemodium_furnace.generation is 2,000 RF per tick.^[7]
• modded_furnaces.vibranium_furnace.speed is 3 ticks.^[7]
• modded_furnaces.vibranium_furnace.mult is 32 items at once.^[7]
• modded_furnaces.vibranium_furnace.generation is 3,000 RF per tick.^[7]
• modded_furnaces.unobtainium_furnace.speed is 1 tick.^[7]
• modded_furnaces.unobtainium_furnace.mult is 64 items at once.^[7]
• modded_furnaces.unobtainium_furnace.generation is 5,000 RF per tick.^[7]

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.^[7]