# Colossal Furnace
An add-on for **[Jumbo Furnace](https://www.curseforge.com/minecraft/mc-mods/jumbo-furnace)** by Commoble. Build a
furnace out of 216 blocks, run it at five tiers, and grow its upgrades in its Heart.
- **6×6×6 multiblock.** Place 216 Colossal Furnace Blocks as a solid cube and it forms when the last block goes down.
- **512 items at once at Tier 1**, up to **1,728 at Tier 5** (all 27 input stacks in one batch).
- **27 input, 18 fuel and 27 output slots**, plus an **Upgrade** slot and **the Heart**.
- **Hoppers and pipes work on every outside face.**
- **Upgrades grow.** Put one in the Heart and it slowly turns into the next tier while the furnace cooks.
- Its own furnace screen, whose trim changes colour with the tier.
- **JEI and EMI** info pages for every item, and its own creative tab.
- **Every number is configurable.**
## Building it
**1. Fragment Mold** (crafting table, reusable):
**2. Jumbo Furnace Fragment:** in any Jumbo Furnace, smelt **64 Furnaces + 1 Fragment Mold**. You get 1 Fragment and the Mold back. Without a Mold, the Jumbo Furnace makes Jumbo Furnaces as usual.
**3. Colossal Furnace Blocks:** put 8 Fragments in a ring on a crafting table (the furnace shape) to get **8 blocks**.
**4. Build:** place **216 blocks** as a solid 6×6×6 cube. Breaking any block gives all 216 back and drops everything
inside.
The full furnace costs **13,824 furnaces** (110,592 cobblestone). It's an endgame build.
## The five tiers
The item in the **Upgrade** slot sets the tier. An empty slot means Tier 1.
| Tier | Items at once | Cook time | Items per coal | How to get it |
|-----|-----------------|------------|------------------|----------------|
| 1 | 512 | 5 s | 16 | Build the furnace |
| 2 | 768 | 4 s | 24 | **Tier 2 Upgrade:** smelt 8 Colossal Furnace Blocks + 64 Blaze Rods + 64 Magma Blocks + 1 Fragment Mold in a Jumbo or Colossal Furnace (you get the Mold back) |
| 3 | 1,024 | 3 s | 32 | Grow a Tier 2 Upgrade in the Heart |
| 4 | 1,344 | 2.5 s | 48 | Craft an Unfinished Tier 4 Upgrade, then grow it in the Heart |
| 5 | 1,728 | 2 s | 64 | Craft an Unfinished Tier 5 Upgrade, then grow it in the Heart |
**Unfinished Tier 4 Upgrade** (crafting table):
**Unfinished Tier 5 Upgrade** (crafting table):
At Tier 3 and Tier 4 you choose: put the upgrade in the Upgrade slot to run the furnace at that tier, or craft it
onward toward the next one.
## The Heart
The Heart holds one **Tier 2 Upgrade**, **Unfinished Tier 4** or **Unfinished Tier 5** and grows it into the next
tier.
- It grows **only while the furnace is cooking**: +1 for every item smelted.
- **Overheat:** with the furnace lit and **all 18 fuel slots stocked**, growth is **twice as fast**. The firebox
glows brighter and the Heart pulses.
- Targets: **100,000** items for Tier 3, **250,000** for Tier 4 and **500,000** for Tier 5.
- **Progress is saved on the item.** You can take it out, break the furnace or move it to another furnace without
losing anything. Hover it to see `Growing: 42,310 / 100,000`.
- When it reaches the target, it turns into the next upgrade in place, with a burst of flame.
- Each upgrade does one job at a time, so you can run your furnace on one upgrade while you grow another.
## Requirements
- Minecraft **1.21.1** with **NeoForge**
- **[Jumbo Furnace](https://www.curseforge.com/minecraft/mc-mods/jumbo-furnace) 5.0.0.9 or newer** (required)
- [JEI](https://www.curseforge.com/minecraft/mc-mods/jei) or [EMI](https://www.curseforge.com/minecraft/mc-mods/emi)
(optional, for the info pages)
- Install it on both the client and the server.
## Config
`serverconfig/colossalfurnace-server.toml` in your world folder contains each tier's items at once, cook time and
items per coal, plus the three growth targets and the overheat multiplier.
## Good to know
- The furnace screen is wide. If it doesn't fit on a small window, set GUI Scale to Auto or one step lower.
- The Upgrade slot and the Heart are hand-filled only. Hoppers and pipes use the input, fuel and output slots.
- Hoppers move about 2.5 items per second, so the higher tiers are meant for pipes or Create funnels.
## Modpacks
You're welcome to include Colossal Furnace in any modpack.
## Credits
Built on **[Jumbo Furnace](https://www.curseforge.com/minecraft/mc-mods/jumbo-furnace)** by **Commoble**. Its
smelting engine is reused under the MIT license, and Jumbo Furnace is required to play.
