Unslab
Turn any Modded & Vanilla slabs back to full blocks with crafting!
Screenshots
About this Mod
Transform modded and vanilla slabs back into full blocks with ease!
If a slab is mapped to the wrong block, please report it on GitHub Issues.
Requires Fabric API and Omnilib. Also compatible with Forge and NeoForge, using Sinytra Connector, requires Forgified Fabric API.
This mod provides a GUI interface where you can customize mappings - which for now doesn't work on servers. Therefore, for servers, Unslab is not required on the client.
Official Downloads:
- CurseForge: https://www.curseforge.com/minecraft/mc-mods/unslab
- GitHub: https://github.com/dooji2/unslab
- Modrinth: https://modrinth.com/mod/unslab
Available Versions
How to Install Unslab 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 (1.21.5).
Install Mod
Open the mod browser in the dashboard and search for "Unslab". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.5, 1.21.4, 1.21.3 (+4 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Unslab 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 (1.21.5). You can switch loaders with one click in the panel.
Is Unslab compatible with fabric?
Unslab officially supports fabric for Minecraft 1.21.5, 1.21.4, 1.21.3. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Unslab – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Unslab 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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