
Better Structure Block Mod is a mod that allows you to copy structures larger than the default limit of vanilla structure blocks. This is what you have to remember for this mod. You can’t use it like a normal structure block, using the GUI. The GUI is still there but only for saving and changing if entities are loaded in with it and stuff like that To change the size and the relative position, you have to use a command.

The command syntax is /st <pos:size> <axis> <value> OR /st <pos:size> <x> <y> <z>. (eg /st pos x 15 will set the x axis for the position to 15. /st size 14 26 61 will set the size of the blocks to x:14 y:26 z:61). This will apply those settings to all the custom Structure Blocks, so all of the Custom Structure blocks will update.
Better Structure Block Mod Download Links
For Minecraft 1.12.2
Forge version: Download from Server 1 – Download from Server 2
- Edition: Minecraft Java
- File type: .jar
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: In MC Java Mods, or directly above on this page.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Downloads as 199905.mcaddon
- Download size: 47 KB
- Download link checked 29 Jul 2026 — working
- Mirrored on our own servers — the download does not depend on the original host
These come from our own check of the pack file, not from the source page.