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Multi Builder Tool

Build Multiblocks with one click
by igentuman
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241,627 downloads
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Updated Jun 30, 2026
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Tired of building numerous structures by hand?

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Use MBTool! 
 

 

Structures included by default for mods:

  • Mekanism
  • Mekanism Generators
  • NuclearCraft: Neoteric
  • Tinkers Construct
  • Immersive Engineering
  • Blood Magic
  • Extreme Reactors

Grouping structures:

If you like to group structures you can simply create a sub-folder in mbtool_structures folder eg. "reactors", and place all reactor structures inside. This also can be done with kubejs, see example below.

Kube JS support:

MbtoolKJSEvents.InitMbtoolStructures(event => {
for(let i = 0; i < event.structures.length; i++) {
console.log(event.structures[i].getId());
console.log(event.structures[i].getName());
console.log(event.structures[i].getStructureNbt());
console.log(event.structures[i].getGroup());

event.structures[i].setStructureNbt(CompoundTag.fromJSON({})); // set structure nbt (you can use this to change the structure, but be careful!)
var nbt = event.structures[i].getStructureNbt(); // get structure nbt
nbt.palette[0].Name = 'minecraft:iron_block'; // change first block in palette to iron block
event.structures[i].setStructureNbt(nbt); // set structure nbt again
//if you wish to remove structure, then set some non existing block
nbt.palette[0].Name = 'minecraft:not_existing_block';
event.structures[i].setStructureNbt(nbt); // set structure nbt again

// Example if you wish to pack all reactors into Group
if (event.structures[i].getId().toString().toLowerCase().includes('reactor')) {
event.structures[i].setGroup('Reactors');
}
}
});

 

JOIN DISCORD

 

Checkout my other mods!

 

Description for 1.20+

  • SHIFT+use to open GUI

  • SHIFT+SCROLL to rotate structure before placement

  • Multibuilder Tool has own inventory where you store blocks needed for building

  • Better structure selection GUI with search field and multiblocks previews

  • Implemented server-client sync. When client joins the server, it will have only structures what server sent

  • Easy to add new structures. In your data pack locate NBT structure files in following path: data/mbtool/mbtool_structures/my_custom_structure.nbt
    Add translations for your structure: "mbtool.structure.my_custom_structure": "Your structure name"

 

Allows to use AE2 ME storage for buildings if you have linked Wireless terminal in your inventory

   

Description for MC 1.12.2

Supports structures from: Mekanism, Immersive Engineering, Immersive Petroleum, NuclearCraft, QMD, IC2, TConstruct, Extreme Reactors, Draconic Evolution

Add your own multistructures.

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MultiBuilderTool-1.20.1-1.0.26.jar
MC Client, 1.20.1, Forge, NeoForge, Server
Release 2026-06-21 Get
MultiBuilderTool-1.20.1-1.0.25.jar
MC Client, 1.20.1, Forge, NeoForge, Server
Release 2026-06-20 Get
MultiBuilderTool-1.20.1-1.0.24.jar
MC Client, 1.20.1, Forge, NeoForge, Server
Release 2026-06-10 Get
MultiBuilderTool-1.20.1-1.0.23.jar
MC Client, 1.20.1, Forge, NeoForge, Server
Release 2026-05-14 Get
MultiBuilderTool-1.21.1-1.1.25.jar
MC Client, 1.21.1, NeoForge, Server
Release 2026-05-13 Get
MultiBuilderTool-1.21.1-1.1.24.jar
MC Client, 1.21.1, NeoForge, Server
Release 2026-05-08 Get
MultiBuilderTool-1.21.1-1.1.23.jar
MC Client, 1.21.1, NeoForge, Server
Release 2026-05-06 Get
MultiBuilderTool-1.20.1-1.0.22.jar
MC Client, 1.20.1, Forge, NeoForge, Server
Release 2026-05-05 Get
MultiBuilderTool-1.21.1-1.1.22.jar
MC Client, 1.21.1, NeoForge, Server
Release 2026-05-04 Get
MultiBuilderTool-1.20.1-1.0.21.jar
MC Client, 1.20.1, Forge, NeoForge, Server
Release 2026-05-04 Get
MultiBuilderTool-1.21.1-1.1.21-rc2.jar
MC Client, 1.21.1, NeoForge, Server
Release 2026-03-13 Get
MultiBuilderTool-1.21.1-1.1.21-beta1.jar
MC Client, 1.21.1, NeoForge, Server
Release 2026-03-12 Get
MultiBuilderTool-1.21.1-1.1.21-rc1.jar
MC Client, 1.21.1, NeoForge, Server
Release 2026-03-12 Get
MultiBuilderTool-1.20.1-1.0.20.jar
MC Client, 1.20.1, Forge, NeoForge, Server
Release 2026-03-10 Get
MultiBuilderTool-1.20.1-1.0.19.jar
MC Client, 1.20.1, Forge, NeoForge, Server
Release 2026-03-09 Get
MultiBuilderTool-1.20.1-1.0.18.jar
MC Client, NeoForge, 1.20.1, Forge, Server
Release 2025-11-03 Get
MultiBuilderTool-1.20.1-1.0.17.jar
MC Client, NeoForge, 1.20.1, Forge, Server
Release 2025-10-17 Get
MultiBuilderTool-1.20.1-1.0.16.jar
MC Client, NeoForge, 1.20.1, Forge, Server
Release 2025-10-05 Get
MultiBuilderTool-1.20.1-1.0.16-rc.1.jar
MC Client, NeoForge, 1.20.1, Forge, Server
Release 2025-09-28 Get
MultiBuilderTool-1.20.1-1.0.16-rc.2.jar
MC Client, NeoForge, 1.20.1, Forge, Server
Release 2025-09-28 Get
MultiBuilderTool-1.20.1-1.0.15.jar
MC Client, NeoForge, 1.20.1, Forge, Server
Release 2025-09-15 Get
MultiBuilderTool-1.20.1-1.0.14.jar
MC Client, NeoForge, 1.20.1, Forge, Server
Release 2025-09-08 Get
MultiBuilderTool-1.20.1-1.0.13.jar
MC Client, NeoForge, 1.20.1, Forge, Server
Release 2025-08-26 Get
MultiBuilderTool-1.0.6.jar
MC Client, Forge, Server, 1.12.2
Release 2025-08-25 Get
MultiBuilderTool-1.20.1-1.0.12.jar
MC Client, NeoForge, 1.20.1, Forge, Server
Release 2025-08-19 Get
MultiBuilderTool-1.20.1-1.0.11.jar
MC Client, NeoForge, 1.20.1, Forge, Server
Release 2025-08-18 Get
MultiBuilderTool-1.20.1-1.0.10.jar
MC Client, NeoForge, 1.20.1, Forge, Server
Release 2025-08-12 Get
MultiBuilderTool-1.20.1-1.0.8.jar
MC Client, NeoForge, 1.20.1, Forge, Server
Release 2025-08-11 Get
MultiBuilderTool-1.20.1-1.0.9.jar
MC Client, NeoForge, 1.20.1, Forge, Server
Release 2025-08-11 Get
MultiBuilderTool-1.20.1-1.0.7.jar
MC Client, NeoForge, 1.20.1, Forge, Server
Release 2025-08-09 Get
MultiBuilderTool-1.20.1-1.0.6.jar
MC Client, NeoForge, 1.20.1, Forge, Server
Release 2025-08-06 Get
MultiBuilderTool-1.20.1-1.0.5.jar
MC Client, NeoForge, 1.20.1, Forge, Server
Release 2025-08-05 Get
MultiBuilderTool-1.20.1-1.0.3.jar
MC Client, NeoForge, 1.20.1, Forge, Server
Release 2025-08-04 Get
MultiBuilderTool-1.20.1-1.0.4.jar
MC Client, NeoForge, 1.20.1, Forge, Server
Release 2025-08-04 Get
MultiBuilderTool-1.20.1-1.0.2.jar
MC Client, NeoForge, 1.20.1, Forge, Server
Release 2025-08-01 Get
MultiBuilderTool-1.20.1-1.0.0.jar
MC Client, NeoForge, 1.20.1, Forge, Server
Release 2025-07-31 Get
MultiBuilderTool-1.20.1-1.0.1.jar
MC Client, NeoForge, 1.20.1, Forge, Server
Release 2025-07-31 Get
MultiBuilderTool-1.0.5.jar
MC Client, Forge, Server, 1.12.2
Release 2024-10-06 Get
MultiBuilderTool-1.0.4.jar
MC Client, Forge, Server, 1.12.2
Release 2024-10-02 Get
MultiBuilderTool-1.0.3.jar
MC Client, Forge, Server, 1.12.2
Release 2024-09-23 Get

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