Furnaces - Qelifern/IronFurnaces GitHub Wiki
Furnaces each have a logical upgrade path, as well as an upgrade item associated with them with few exceptions. Progressing through the logical upgrade path will yield an increase in cook speed, as well as increased effectiveness when using certain Augments. Some furnaces are capable of processing multiple items at once by default, and this additional processing bonus also carries over when using the Factory Augment. This page serves to provide a brief overview of all furnaces included in the mod, as well as their crafting recipes. For a complete list of crafting recipes of all blocks and item included in the mod, see the 
Crafting Recipes page.
Copper Furnace [Tier 0]
Description
The Copper Furnace is created by either crafting the block itself, or using the Stone to Copper Furnace Upgrade on a Stone Furnace.
Cooktime: 180 (1 Item / 9 Seconds)
Items Processed: 1 item
Recipes
Iron Furnace [Tier 1]
Description
The Iron Furnace is created by either crafting the block itself, or using the Stone to Iron Furnace Upgrade on a Stone Furnace. Additionally the Iron Furnace can be obtained by using the Copper to Iron Furnace Upgrade on a Copper Furnace.
Cooktime: 160 (1 Item / 8 Seconds)
Items Processed: 1 item
Recipes
Silver Furnace [Tier 1.5]
Description
The Silver Furnace is created by either crafting the block itself, or using the Copper to Silver Furnace Upgrade on a Copper Furnace. Additionally the furnace can be obtained by using the Iron to Silver Furnace Upgrade on an Iron Furnace.
Cooktime: 140 (1 Item / 7 Seconds)
Items Processed: 1 item
Recipes
Gold Furnace [Tier 2]
Description
The Gold Furnace is created by either crafting the block itself, or using the Iron to Gold Furnace Upgrade on an Iron Furnace. Additionally the Gold Furnace can be obtained by using the Silver to Gold Furnace Upgrade on a Silver Furnace.
Cooktime: 120 (1 Item / 6 Seconds)
Items Processed: 1 item
Recipes
Diamond Furnace [Tier 3]
Description
The Diamond Furnace is created by either crafting the block itself, or using the Gold to Diamond Furnace Upgrade on a Gold Furnace.
Cooktime: 80 (1 Item / 4 Seconds)
Items Processed: 1 item
Recipes
Emerald Furnace [Tier 4]
Description
The Emerald Furnace is created by either crafting the block itself, or using the Diamond to Emerald Furnace Upgrade on a Diamond Furnace.
Cooktime: 40 (1 Item / 2 Seconds)
Items Processed: 1 item
Recipes
Crystal Furnace [Tier 4]
Description
The Crystal Furnace is created by either crafting the block itself, or using the Diamond to Crystal Furnace Upgrade on a Diamond Furnace.
Cooktime: 40 (1 Item / 2 Seconds)
Items Processed: 1 item
Recipes
Obsidian Furnace [Tier 5]
Description
The Obsidian Furnace is created by either crafting the block itself, or using either the Emerald to Obsidian Furnace Upgrade on an Emerald Furnace or the Crystal to Obsidian Furnace Upgrade on an [Crystal Furnace].
Cooktime: 20 (1 Items / 1 Second)
Items Processed: 1 item
Recipes
Netherite Furnace [Tier 6]
Description
The Netherite Furnace is created by either crafting the block itself, or using the Obsidian to Netherite Furnace Upgrade on an Obsidian Furnace.
Cooktime: 5 (4 Items / 1 Second)
Items Processed: 1 item
Recipes
Rainbow Furnace
Description
The Rainbow Furnace is created by either crafting the block itself, and cannot be created by upgrading another furnace. The Rainbow Furnace can also generate an additional 50 kRF/tick if it is linked to all other furnaces as generators using a Rainbow Linker.
Cooktime: 20 (64 Items / 1 Second)
Items Processed: 64 items
Recipes
Allthemodium Furnace
Description
The Allthemodium Furnace is created by either crafting the block itself, or using the Netherite to Allthemodium Furnace Upgrade on a Netherite Furnace. This furnace requires the mod Allthemodium to be installed.
Cooktime: 5 (64 Items / 1 Second)
Items Processed: 16 items
Recipes
Vibranium Furnace
Description
The Vibranium Furnace is created by either crafting the block itself, or using the Allthemodium to Vibranium Furnace Upgrade on an Allthemodium Furnace. This furnace requires the mod Allthemodium to be installed.
Cooktime: 3 (213.33... Items / 1 Second) Items Processed: 32 items
Recipes
Unobtanium Furnace
Description
The Unobtanium Furnace is created by either crafting the block itself, or using the Vibranium to Unobtanium Furnace Upgrade on a Vibranium Furnace. This furnace requires the mod Allthemodium to be installed.
Cooktime: 1 (1280 Items / 1 Second)
Items Processed: 64 items