If you run a GRBL-based diode laser (many CNC shields, Ortur-style boards, and Arduino GRBL builds), LaserGRBL is a popular free Windows host app. This guide explains what it does, a practical DXF/SVG import workflow, and where to get it from the official project only.
What LaserGRBL is (and is not)
LaserGRBL is free, open-source software that talks to GRBL firmware over USB serial. It can load images and vector files, generate engraving/cutting toolpaths, and send jobs to compatible lasers. It is not a replacement for every controller brand — machines on proprietary boards (or LightBurn-only DSP controllers) need their own software.
- Best fit: hobby diode lasers and CNC machines running GRBL
- Platform: Windows (official builds)
- Job types: raster engraving, vector cutting, simple CAM-style prep
Official download (safe source)
Only download LaserGRBL from the official project pages:
- Project site: https://lasergrbl.com/
- Source / releases: https://github.com/arkypita/LaserGRBL
Avoid random “crack”, mirror, or “full version free” sites. LaserGRBL is already free — shady installers are how malware gets on workshop PCs.
Clean DXF / SVG workflow with Cut Stock files
- Buy or download a design from Cut Stock as DXF or SVG.
- Open LaserGRBL → load the file (File → Open File).
- Check scale: confirm millimetres match the product listing size before you cut.
- Assign power and speed for your material (cardboard scrap first).
- Frame / jog to verify origin, then start the job with the lid closed and ventilation on.
For multi-layer jobs (cut + score + engrave), keep layers separate in the vector file and set different power/speed passes in LaserGRBL rather than guessing one global setting.
Settings that matter on GRBL machines
- $100 / $101 steps/mm — wrong values = wrong size even when the DXF is correct
- Max travel — prevent crashes into the frame
- Laser mode ($32) — enable laser mode when your firmware supports it
- Air assist / focus — hardware, not software, but decide before the first paid cut
When to choose something else
If your laser is on a Ruida / Trocen DSP, look at the manufacturer’s software (often RDWorks-family) or LightBurn with a supported license. If you need advanced CAM, nesting, or rotary tools beyond GRBL hobby use, graduate to the tool that matches the controller.
Quick checklist
- Download only from lasergrbl.com or the official GitHub
- Test on scrap with Cut Stock DXF/SVG imports
- Verify millimetre scale before production cuts
- Keep firmware backups when changing GRBL settings
Ready for vectors that import cleanly? Browse Cut Stock DXF and SVG designs built for laser and CNC workflows.