FurnaceSpeed — Fabric Mod FurnaceSpeed is a lightweight Fabric mod that lets you control how fast all furnace‑type blocks process items. Whether you’re smelting ores, cooking food, or mass‑processing materials, you decide how many furnace ticks run per server tick. Perfect for technical players, automation setups, or anyone who wants to eliminate waiting time.
Features
/furnaceSpeed
Displays the current speed multiplier.
/furnaceSpeed <1–1000>
Sets how many furnace ticks are executed per server tick.
Example: 20 = 20× faster smelting.
World‑specific configuration
The value is saved in
.//furnacespeed.cfg
and automatically loaded when the world starts.
Affects all furnace variants
Furnace
Blast Furnace
Smoker
Singleplayer & Multiplayer support
Works instantly in singleplayer (player is OP by default).
Requires OP level 2 on servers.
How it works A Mixin injects into the static method AbstractFurnaceBlockEntity.tick(...). After the vanilla tick completes, the mod runs (multiplier - 1) additional ticks. A re‑entrancy flag prevents recursive calls, and the BlockState is re‑read after each extra tick to maintain vanilla behavior and invariants.
Compatibility Minecraft 1.21.2 – 1.21.10
Fabric API
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.2, 1.21.3, 1.21.4
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as furnace-speed1.21.2-1.21.10.jar — drop this file into the mods folder
- Download size: 9 KB
- Download link checked 6 Sept 2026 — working
These come from our own check of the pack file, not from the source page.