ReBuilder

Makes it easier ReBuild. What, did you think this would be complicated?

3.1K Downloads

fabricutility

About this Mod

In order to quicken the building of repetitive features, this mod will allow you to record block placement patterns, then build them instantly later.

Builds require a name, and can be cycled through with a selectable key; cycling while sneaking cycles backwards.

ALSO BE CAREFUL ABOUT USING THIS ON SERVERS!

It should work, but if they have ANY anticheat, it might get you banned!

Build Tutorial

Saving a build requires both Mod Menu and Cloth Config, unfortunately.

Hold your ReBuilder modifier key (alt by default; does not work with the toggle key) and press your cycler key (Z by default). This will start recording without opening the menu screen.

Any blocks placed between starting to record and ending the recording will be recorded.

Open ReBuilder's config menu OR Press the same button combination as what you used to start recording.

If you exit without saving, build progress will resume with no changes.

What it looks like to use the mod in compat mode

Available Versions

ReBuilder-5.1.0+26.1release

MC 26.1, 26.1.1, 26.1.2fabric

April 8, 2026

ReBuilder-5.0.0+1.21.1release

MC 1.21.1fabric

March 8, 2026

ReBuilder-5.0.0+1.21.11release

MC 1.21.11fabric

February 17, 2026

ReBuilder-5.0.0+1.21.(9-10)release

MC 1.21.9, 1.21.10fabric

February 17, 2026

ReBuilder-5.0.0+1.21.(6-8)release

MC 1.21.6, 1.21.7, 1.21.8fabric

February 17, 2026

How to Install ReBuilder 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 (26.1.2).

Install Mod

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

Compatibility

Mod Loaders

fabric

Minecraft Versions

26.1.2, 26.1.1, 26.1 (+15 more)

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

ReBuilder 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 (26.1.2). You can switch loaders with one click in the panel.

Is ReBuilder compatible with fabric?

ReBuilder officially supports fabric for Minecraft 26.1.2, 26.1.1, 26.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with ReBuilder – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if ReBuilder 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.