scripts/bench/envelope_test.py drives the null-sink controller with the scripted sender and port client of ctlport_test.py, homing manually: unset keys are the axis travel; envelope_x_mm and envelope_y_mm are the far edges at a home and are held to 50 mm up to the travel plus 30 mm; the port's envelope open is refused before a home and under an open armed window, and lets the port's jogs reach the travel plus 30 mm; envelope apply puts the keys' edges back without a home; a status poll and an empty line leave an open envelope open, while the sender's first line closes it before the core reads it (a jog into the margin draws error:15), a running port jog canceled first; a soft reset and the port client going away each close it. It is registered in the bench registry as a CI harness, not a bench-page tool. setup.check-envelope (suite/bedsize.py, its own module): with cloud mode on, the machine is homed with the camera, and the Bed size check runs with its jog prompts answered as the page would, out 60.1 mm in X and 61.1 mm in Y from the home. The ends it reports are the home plus those, the far edges 1 mm short of them are written as envelope_x_mm and envelope_y_mm, and the controller holds them at once: a panel jog 0.5 mm short of each edge runs, and one 0.5 mm past it is refused with nothing moved. A second run is opened, and while its first prompt waits a Grbl client sends one line, which draws the controller's word that the envelope closed and then ok; the port then says the envelope is closed, the next answer ends the check in words, and the keys are as the first run left them. The head is jogged back to the home, and the keys, the homing mode, and the setup record are put back as found, the record under a restart. Proof: envelope_test.py ALL PASS on the host build of the controller of this change. On the bench reference, with that controller and forgectrl of the same change bind-mounted: the first two campaigns found flaws in the test, not the check (jogs of 20 mm made an edge below the 50 mm forgectrl refuses; the second run started while the machine was still busy; the head was not returned to the home), then setup.check-envelope PASS, with forgectrl.auth, kernel.latch-locked-idle, motion.pacing, motion.jog-roundtrip, and motion.port-jog PASS in the same campaign, and cloud.mode-switch, motion.soft-limits, and homing.cloud-offsets PASS after it. forgetest's unit tests pass (452), and the coverage lint passes with --enforce.
OpenGlow / ForgeFIRM firmware for Glowforge
BETA
ForgeFIRM is in beta. Every release below 0.1.0 is a beta release. Expect problems, 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.