CB Multipart

An opensource library for having multiple things in one block space.

182.7K Downloads

forgeneoforgedecorationlibrary

About this Mod

CB Multipart (formerly known as Forge Multipart) is an Open Source library for allowing multiple functional blocks within a single block space.

CB Multipart includes the multipart API, Micro blocks, and vanilla Multipart/Microblock support.

Please see our GitHub repository for maven/dependency information if you wish to use CB Multipart as a Library.

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Available Versions

CB Multipart 1.20.1-3.3.0.159release

MC 1.20.1forge, neoforge

March 30, 2026

CB Multipart 1.21.1-3.5.0.155release

MC 1.21.1neoforge

December 1, 2025

CB Multipart 1.21.1-3.5.0.151release

MC 1.21.1neoforge

May 27, 2025

CB Multipart 1.21.1-3.5.0.149release

MC 1.21.1neoforge

February 7, 2025

CB Multipart 1.21.1-3.5.0.148release

MC 1.21.1neoforge

January 2, 2025

How to Install CB Multipart on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set forge Loader

In the panel under "Egg", select the forge loader and matching Minecraft version (1.21.1).

Install Mod

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

Compatibility

Mod Loaders

forgeneoforge

Minecraft Versions

1.21.1, 1.20.4, 1.20.1 (+10 more)

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

CB Multipart server crashes on startup – what to do?

Most common cause: wrong forge 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 (1.21.1). You can switch loaders with one click in the panel.

Is CB Multipart compatible with forge and neoforge?

CB Multipart officially supports forge, neoforge for Minecraft 1.21.1, 1.20.4, 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with CB Multipart – how to optimize performance?

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