String Dupers Returned!

A slightly jank solution to mojang's patch to string dupers. Read the documentation for a guide

598 Downloads

fabricgame-mechanicstechnologyutility

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Screenshots

About this Mod

Welcome to my project! This mod aims to give players basically free string by adding a bug mojang fixed in 1.21.3 back to the game. It doesn't exactly work like the old version though, so listen up. First, place a dropper anywhere. this would go where your trapdoors would go for regular patched string dupers, but it does not matter where it goes then, place shears and 2 trapdoors of any type in the bottom slots. then, by having a block behind and to the left or right of the dropper to power the dropper, it is almost ready. it will drop an item so place it back. then place a hopper below the dropper and it will start producing 3 string per second (20 ticks) That's all! enjoy my slightly jank solution.

Available Versions

String Dupers Are Back!release

MC 1.21.8fabric

August 29, 2025

How to Install String Dupers Returned! 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 (1.21.8).

Install Mod

Open the mod browser in the dashboard and search for "String Dupers Returned!". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.8

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

String Dupers Returned! 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 (1.21.8). You can switch loaders with one click in the panel.

Is String Dupers Returned! compatible with fabric?

String Dupers Returned! officially supports fabric for Minecraft 1.21.8. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with String Dupers Returned! – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if String Dupers Returned! 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.