Lightburn 1.6.03 Hot! -

| Problem | Solution | |---------|----------| | Laser won’t fire | Check S-value max (should match controller: 1000, 255, 65535). Verify power not 0%. | | Preview looks fine, burn is offset | Check origin settings in Device; confirm material position matches LightBurn canvas. | | Camera image distorted | Recalibrate using 1.6.03’s bezier method; ensure grid printed at 100% scale. | | GRBL Homing fails | $HX / $HY in console. Set $21=1 (hard limits on). | | Rotary job stretched | Wrong diameter input. Recalculate: circumference / Pi. | | Layer order wrong | Drag layers up/down in Layers panel; bottom burns first (or top, configurable in Edit → Settings → Layers ). |

✅ Recommended. Download LightBurn 1.6.03 today, backup your old config, and enjoy faster, smarter laser operation. LightBurn 1.6.03

Includes a "Randomize orientation" flag to add variety to repeated patterns. | Problem | Solution | |---------|----------| | Laser

LightBurn uses GPU acceleration for canvas pan/zoom and layer previews. Version 1.6.03 fixes a memory leak that caused the application to consume >2GB of RAM on long editing sessions. Heavy users report stable usage around 450MB–700MB. | | Camera image distorted | Recalibrate using 1