Chunk Filler

Chunk Filler is a NeoForge mod for Minecraft 1.21.1 that makes building large, chunk-aligned platforms fast and convenient.

Place a Chunk Filler at the desired height, select the blocks used for the edges and interior, and start the process. The machine will fill a complete horizontal layer across the selected chunk area.

Features

• Five area sizes: 1×1, 3×3, 5×5, 7×7, and 9×9 chunks
• Separate block templates for chunk edges and interiors
• Optional automatic placement of full-block light sources
• Optional clearing of all blocks above the target layer
• In-game interface with progress display
• Tiered crafting recipes for larger Chunk Fillers
• English and Simplified Chinese localization

How to Use

1. Place a Chunk Filler at the height where the platform should be created.
2. Open its interface.
3. Insert a block into the Edge slot.
4. Insert a block into the Core slot.
5. Optionally insert a full-block light source into the Light slot.
6. Enable Clear Top if blocks above the platform should be removed.
7. Press Start Filling.

The inserted blocks act as templates for the generated platform. Each chunk uses the edge block around its border and the core block for its interior.

Warning: Enabling Clear Top permanently removes blocks above the target layer. Back up important worlds before using this option over valuable builds.

Requirements

• Minecraft 1.21.1
• NeoForge 21.1.233 or newer
• Java 21

The mod must be installed on both the client and the server when playing multiplayer.