Each case below repeated a rule another test in CI already proves, read assertion by assertion next to it in the 2026-10-13 test audit: - test_job_window: laser_arm_test.c case I (S changes, and now M5 then M3, inside the window never re-prompt; df7087b) and laser_stream_test session K (M2 closes the window, the next job re-arms). - test_hold_grace: test_resume_after_grace makes the same assertion. - test_verdict_blocks_arm, test_arm_waits_for_engine_ack, test_arm_proceeds_on_a_late_ack: laser_arm_test.c cases C, A2, A3 and cooling_test.c's arm-time gate. test_arm_waits_for_the_fans stays. - test_sender_change: laser_arm_test.c case H; the disarm on a client change is unconditional. - test_jog_does_not_extend_window: laser_arm_test.c case S10. - test_verdict_fail_tier_ends_job: laser_stream_test rule 25 and laser_arm_test.c case V2. - test_verdict_pause_resumes_without_press: laser_stream_test rule 24, which now counts one arm across the pause, and case V1. - test_sender_change_mid_job: merged into test_sender_change_holds_and_rearms, which takes its "held inside the move" position check. - test_sender_change_then_reset: the window is closed and the latch locked by the sender change itself (case H); a reset from Hold is not energy. The header's rules 1, 2, 5, 11, 12 and 14 keep their numbers and name the tests that now prove them. Proof: laser_lifecycle_test passes whole on a null-sink build of the grblHAL-glowforge working tree under Linux (17 sessions), and laser_stream_test with it. pyflakes is clean; no helper was left without a caller. Acceptance: none. The harness runs in grblHAL-glowforge's CI.
OpenGlow / ForgeFIRM firmware for Glowforge
BETA
ForgeFIRM is in beta. Every release below 0.1.0 is a beta release. It's stable, but you may still hit the occasional bug, and expect frequent updates. Upgrade whenever a newer release is available, and report what you find on the community forum.
Open firmware for Glowforge brand CNC lasers. ForgeFIRM replaces the cloud-dependent factory software on the stock control board, with no hardware modification, and gives the machine a local controller, a local web control panel, and a standard Grbl interface. The factory cloud experience stays available as an option.
This repository is the base of the build and of the release: the
meta-forgefirm Yocto layer, the kas configuration, the image recipes, the
install and release scripts, the acceptance tool (forgetest/), the bench
tools (scripts/bench/), the bench actuator firmware (fixture/), and the
release artifacts (releases/).
Start here
https://docs.forgefirm.org/ is the documentation, and the source of truth for every fact about the machine and the firmware.
| Read this first | Safety |
| Put it on a machine | Installation |
| Use it | Usage, LightBurn |
| How the machine works | Technical |
| How ForgeFIRM works with it | ForgeFIRM internals |
| Build, test, release | Developers |
| Downloads | Releases |
| Questions | Community forum |
Build
kas build kas/forgefirm-glowforge.yml
Build covers the host setup, the two images, the source variant and the debug kernel. Release flow covers the pins, the push order and the signing pipeline.
Test
cd forgetest && python3 -m unittest discover -s tests -v
The acceptance catalog that gates a release, and the bench tools, are on Acceptance and The bench.
Contributing
AGENTS.md carries the rules for this repository and for the project: safety ordering, proof before done, the push order, and the writing rules. They apply to human contributors too, and Contribute is the same set on the site.
What this costs
Nothing. ForgeFIRM is free in both senses, under MIT and GPL licenses. There is no paid tier, no license key, no subscription and no Pro edition. If someone offers to sell it to you, the licenses allow it, but what you take home is their build rather than this one: get it from the source.
Safety
These machines contain a CO2 laser: it burns, blinds, and starts fires. Never defeat the lid switches or the interlock. Never leave a running job unattended. Keep a fire extinguisher within reach. Read Safety before you cut your first job, and Regulatory and legal before you install.
This is experimental software. Use of it could seriously maim or kill you or others, and it may void your warranty. Use it at your own risk.
Glowforge is a trademark of Glowforge, Inc. This project is not affiliated with, authorized by, or endorsed by Glowforge, Inc.