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co.build lists third-party projects and provides its own descriptions and setup prompts. Review instructions before running them: device changes can cause damage, data loss or security problems. Independent repair does not automatically remove statutory warranty rights, but damage caused by a modification may be excluded where law permits. Check the project, permissions and local law. Device names and logos belong to their owners; a listing does not imply their endorsement.

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Mods for your GRBL CNC routers

Desktop milling and routing machines using a GRBL-compatible controller.

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What you can change

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Available mods

2 mods

cncjsSelf-hosted server

Run CNC jobs from a local web interface

2,660stars on GitHubActive. Last commit 1mo ago.

Data: From your device or local files. Reads through USB, a diagnostic connection, a local network, files or a local database. Optional cloud features may send data elsewhere.

GrblFirmware mod

Run open motion-control firmware on a compatible board

4,574stars on GitHubInactive. Last commit 2y ago.

Needs: Uno R3 controller and USB cable
Data: From your device or local files. Reads through USB, a diagnostic connection, a local network, files or a local database. Optional cloud features may send data elsewhere.

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