String Dupers Return
Brings back the functionality of traditional string dupers in 1.21.2+
Screenshots
About this Mod
Attempts to simulate traditional string duper functionality in 1.21.2+ since it was patched.
Please report any bugs on the issue tracker.
The plugin version (NOT FABRIC) contains config options to modify the minimum and maximum amount one piece of string can drop when duped. By default, min: 1, max: 3.
Tested on: Spigot, Paper, Purpur, Folia, Fabric
It is not limited to these! It should work on any server software with one of these as an ancestor.
Fabric versions work exactly like traditional string dupers, meaning they are still directional and must be sheared.
This mod is server-side, meaning the client doesn't need it installed to work. (But it still works in singleplayer!)
Available Versions
How to Install String Dupers Return on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (26.2).
Install Mod
Open the mod browser in the dashboard and search for "String Dupers Return". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
26.2, 26.1.2, 26.1.1 (+13 more)
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
String Dupers Return server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (26.2). You can switch loaders with one click in the panel.
Is String Dupers Return compatible with fabric and folia and paper and purpur and spigot?
String Dupers Return officially supports fabric, folia, paper, purpur, spigot for Minecraft 26.2, 26.1.2, 26.1.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with String Dupers Return – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if String Dupers Return consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install String Dupers Return with just one click on your server.