Compatibility
Minecraft: Java Edition
Platforms
Supported environments
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Details
Create Mechanical Rollers, now with Copycats+ layers.
Build smooth railway foundations along straight, diagonal, and curved tracks in 1/8-block steps.

Features
- Precise Copycat paving along railway tracks
- Layer, Half Layer, and Slope Layer support
- Automatic Layer/Half Layer selection with a Zinc Ingot
- Blocks selected by Create or compatible Roller-filter mods fill Copycats
- The same blocks continue normal Create paving in empty spaces
- Safe item use with no hidden material balance
Filters
Put one of these items in a Mechanical Roller's filter:
- Copycat Layer
- An adjustable surface in 1/8-block steps
- Copycat Half Layer
- Independent height on both sides
- Copycat Slope Layer
- A smooth slope where a suitable state exists
- Zinc Ingot
- Automatically chooses Layer or Half Layer
- Any supported block or compatible modded filter
- Applies the block actually selected for each position to Copycats and continues normal Create paving
Addon features are active in Fill (STRAIGHT_FILL) mode. Tunnel and Wide
Fill keep their normal Create behavior.
Compatible filters need no dedicated integration: Copycat Roller follows the block selected by the normal Roller placement transaction.
Item Use
layers=NcostsNLayer or Slope Layer items.- A Half Layer costs the sum of its two sides.
- One Zinc Ingot makes up to 8 Layers or 16 Half Layers. Change is kept as real Half Layer items.
- Filling a Copycat costs one material block per empty part. Normal paving consumes its usual additional blocks.
Existing player-assigned materials are never overwritten. If the complete cost is unavailable, the operation is cancelled safely.
Requirements
- Minecraft 1.21.1
- NeoForge 21.1.x
- Create 6
- Copycats+ 3.0.4
- Java 21
Install the requirements and place Copycat Roller in the mods folder on both
client and server.
Configuration
The config can change height rounding, surface-only paving, Copycat fill depth, and Slope Layer accuracy. By default, the Roller rounds down and places only the nearest upper Copycat surface.


