
🔧 StringDuperFixRestorer A simple Paper plugin that brings back string duper behavior — even after Mojang patched it. Great for technical Minecraft servers that rely on redstone contraptions or want to re-enable string farming.
💡 Features
- Restores string duping (based on old tripwire mechanics)
- Only works under specific conditions, mimicking how dupers used to behave
- Uses flowing water, tripwire hooks, and tripwire like old duper designs
- Automatically replaces and breaks string for continuous output
⚙️ How It Works
- When tripwire is attached between two tripwire hooks and flowing water (not source) is directly beneath:
- The string breaks, drops one item
- It's replaced automatically
- Then breaks again after a short delay
- This cycle creates a loop similar to historical dupers
🧱 Requirements
- Minecraft 1.21.8
- A Paper-based server
- Java 17+
📥 Installation
- Drop the .jar into your server's plugins/ folder
- Restart the server
- Use /stringdupe enable in a chunk where your duper is located
🛠️ Configuration No config file required
🧪 Tested On
- Paper 1.21.8
- Local Multiplayer server
- Public Multiplayer with multiple dupers
🔒 License This plugin is distributed under the All Rights Reserved license. If you'd like to fork or modify it, please contact the author.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.8
- 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.
Verified by MCModsHub
- Ships as StringDuperFixRestorer-2.2-1.21.8.jar — drop this file into the mods folder
- Download size: 16 KB
- Download link checked 29 Aug 2026 — working
These come from our own check of the pack file, not from the source page.