Slab Manager

Prevents placing double slabs and lets you lock top/bottom slab placement.

71 Downloads

fabricgame-mechanics

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About this Mod

Slab Manager

Slab Manager improves how slabs are placed so building is faster and less frustrating.

What this mod does

Adds smarter slab placement logic.
Reduces misplacements when targeting slab positions.
Makes slab building feel more consistent during normal gameplay.
Lets you switch slab placement mode with the U key (default).

Why download it

Saves time while building.
Gives more reliable slab placement in tight spaces.
Keeps gameplay lightweight and focused on quality-of-life improvements.

Controls

U: Toggle/switch slab mode.

Available Versions

Slab Manager 1.0.0release

MC 1.21.11fabric

February 23, 2026

How to Install Slab Manager 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 (1.21.11).

Install Mod

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

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Slab Manager 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 (1.21.11). You can switch loaders with one click in the panel.

Is Slab Manager compatible with fabric?

Slab Manager officially supports fabric for Minecraft 1.21.11. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Slab Manager – how to optimize performance?

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