FastFurnace [FABRIC]

Mod

A performance upgrade for the furnace. [Unofficial Port]

Type

Mod

Modrinth Downloads

5,529

Modrinth ID

fZ3j1CdO

Last Updated

Jul 27, 2026

Description

About

This is an unofficial port of FastFurnace to Fabric for Minecraft 1.21+. The original mod was developed by shadows_of_fire for Forge/NeoForge.

FastFurnace utilizes mixins to edit the functionality of the Furnace, Blast Furnace, and Smoker, improving their TPS performance (not smelting speed!)

Similar to FastWorkbench, it caches the last recipe used, and checks this recipe first before re-scanning the entire registry. This is significantly faster due to the vanilla furnace scanning the entire furnace registry each tick, which may be fine for vanilla, but in a modded environment, gets very large very quickly.

These changes apply to the Furnace, Blast Furnace, and Smoker. Any mod utilizing AbstractFurnaceTileEntity will also receive the benefits of having this mod installed.

For people who like numbers, here is Vanilla vs FastFurnace. This is 9 furnaces each smelting cobblestone the entire time the test was conducted. The number of invocations is kept roughly the same as to not skew any numbers. This test was conducted in vanilla, which only has ~70 furnace recipes. In a modpack, there could be upwards of 700, significantly increasing the performance gain.