Duplication Furnace
by HitBoost
Duplication Furnace is a Fabric magic mod that gives a special furnace a rule for doubling the output of selected smelting recipes.
What it does
The special furnace doubles the result of smelting for the items it accepts, so one input produces two outputs. The author describes the mod as built for pure duplication fun, with the rules and restrictions left to the player. It accepts smeltable items such as ores, foods and blocks, and the author states that it works with anything that can be smelted.
Smelting in the special furnace takes twice as long per output, which keeps the doubling from being free. A crafting recipe that stays within survival rules gives the furnace a unique enchanted-glint texture, so it can be told apart from a normal furnace. The author presents the mod as a way to make resource gathering and speedrunning a little more chaotic.
The mod is published for Fabric Loader 1.20.1 and needs Fabric API. Servers that run it need every player to install it too. Files are released under the MIT License and the source code is public.
Key features
Doubled smelting output
The special furnace turns each smeltable input into two results instead of one.
Slower double output
Each doubled smelt takes twice the time of a normal smelt, so the bonus has a cost.
Recipe and texture
The furnace has a survival-friendly crafting recipe and a glinting texture that marks it apart from vanilla furnaces.
Wide input support
Ores, foods, blocks and other smeltable items can all go through the special furnace.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Speedrunning and resource gathering
Players who want more output per ore or food can use the furnace to speed up resource collection in survival.
Chaotic survival
The doubling rule adds unpredictability to a normal survival run, since each load of the furnace behaves differently from vanilla.
Who it’s for: Survival players and speedrunners who want a faster smelting option. Servers that allow the furnace need it installed on the server and on every client.
How it compares
Smelt Touch is a Fabric mod for 1.20.1 – 1.20.4, client and server, under the Creative Commons Attribution 4.0 license, and it is not open source. Disposable Furnaces is open source under the GNU Lesser General Public License v3.0 only, for 1.20.4 – 1.20.6, and also needs both sides. Duplication Furnace covers only 1.20.1 and is open source under the MIT License.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Duplication Furnace | Fabric | 1.20.1 | Client and server | 2025-08-15 |
| Smelt Touch | Fabric | 1.20.1 – 1.20.4 | Client and server | 2024-05-27 |
| Disposable Furnaces | Fabric | 1.20.4 – 1.20.6 | Client and server | 2024-05-19 |
Questions
Does Duplication Furnace need Fabric API?
Does the server need Duplication Furnace?
Which Minecraft versions does Duplication Furnace support?
In the catalog
Duplication Furnace is one of 7,216 Magic mods on ModsFinder, and one of 3,630 Magic mods for Fabric. 34,764 mods support Minecraft 1.20.1.
More from HitBoost
Similar mods
What the author says
Duplication Furnace is a simple but powerful Minecraft mod by Shirjeel_plays that lets you smelt any item and get double the output — no rules, no restrictions, just pure duplication fun! Perfect for speedrunning resource gathering or making survival a little more chaotic.
Official listing
- Modrinth page
- modrinth.com/mod/duplication-furnace
- Owner
- HitBoost
- Published
- 2025-08-15
- Updated on Modrinth
- 2025-08-15
- Facts verified
- 2026-10-15