Copy Materials Tool

A Quality of Life mod that extends the "Copy Settings" tool to also copy construction materials between buildings of the same type.

• Material Copying – Copy construction materials from one building to others of the same prefab type
• Conduit Support – Fully supports wires, logic wires, liquid conduits, and gas conduits (including insulated variants)
• Connection Preservation – Maintains conduit connection states during rebuild operations
• Bridge Support – Works with standard and extended bridges (compatible with ExtendedBuildingWidth mod)
• Smart Rebuilding – Automatically deconstructs and rebuilds buildings with the new material
• Batch Operations – Copy materials to multiple buildings by dragging the tool

1. Select Source Building – Click on a building to use as the source
2. Activate Copy Materials – In the building’s side screen, click the "Copy Materials" button
3. Apply to Targets – Click or drag over target buildings of the same type
4. Automatic Rebuild – The mod will:
   • Queue deconstruction of target buildings
   • Place blueprints with the source material
   • Preserve conduit connections

• Works with all building types: regular buildings, conduits, bridges, and more
• If materials already match, no rebuild is needed
• For conduits, connections to neighboring conduits are automatically preserved
• Extended bridges maintain their width when copying materials

• ExtendedBuildingWidth Mod – Fully supported – bridge widths are preserved when copying materials
• TrueTiles – Fully functional, but the construction blueprint ghost may not be visible while a tile is being rebuilt. The errand and reconstruction work correctly.
• Other Mods – Compatible with most mods. If you encounter issues, please report them.
• Oxygen Not Included – Build 700386 or later
• Mod API – Version 2

Minimal Performance Impact

• Idle – No performance impact when the tool is not in use
• Active Use – Lightweight operations only during active tool usage
• Temporary Components – All monitoring components self-destruct after completing their tasks
• Event-Driven – Uses Harmony patches that only trigger on specific game events

The mod is designed to be efficient and should not impact game performance, even in large colonies.

• Only works with buildings of the same prefab type (e.g., can’t copy from a Wire to a Logic Wire)
• Requires buildings to be deconstructed and rebuilt (takes time)
• Large batch operations may queue many deconstruction tasks

• Ensure source and target buildings are the same type
• Check that the tool is properly activated (button clicked in side screen)
• Verify the mod is enabled in the Mods menu

• This should be rare. If connections aren’t preserved, try copying one building at a time
• Report the issue with details about the building type and connections

• For bridges, there may be a brief moment where a blueprint appears before deconstruction completes
• This is normal and will resolve automatically

• Port Overlap Errors – Resolve temporary overlapping ports error that can occur with bridges

Need help, found a bug, or have a suggestion? We’re here to help!

• 💬 Discord: Join our Discord server[discord.com] for discussions, questions, and community support
• 📝 GitHub Discussions: Discuss on GitHub[github.com] – share ideas, ask questions, or get help with modding

Found a bug or have a feature request? Please report it on GitHub using our issue templates:

• 🐛 Bug Reports: Report a Bug[github.com] – Use this for crashes, errors, or unexpected behavior
• 💡 Feature Requests: Suggest a Feature[github.com] – Have an idea for a new feature or improvement?
• ❓ Questions: Ask a Question[github.com] – Need help understanding how something works?
• 📝 Other Issues: Other Issue[github.com] – Something else that doesn’t fit the above categories

• My Workshop – All my ONI mods on Steam
• ONI 235+ Ultimate Mods collection – 235+ tested, compatible mods for Oxygen Not Included
• The Controlled Series – Collection of Controlled mods

• Built using PLib[github.com] by Peter Han
• Uses Harmony[github.com] for runtime patching
• Inspired by the game’s built-in Copy Settings tool

• 2.0.1: March 2026 update compatibility patch
• 2.0.0: Major rewrite – Fixed "Priority Value Out Of Range: 0" error causing missing priority numbers
• 1.0.1: Bugfix – added icon to button
• 1.0.0: Initial release
• 0.1.1: Code cleaning
• 0.1.0: Test release