This is most commonly caused by build-up of debris on the achromatic lens, this can happen gradually, or suddenly (fingerprints!).
Certain materials emit oily vapours which cling to the lens. E.g. Eucalyptus wood or hotdogs.
Please follow the steps in the Lightburn Lens cleaning wizard to resolve this problem.
If you have changed computers or reinstalled Lightburn you will need to enter the machine tool offset into Lightburn again. Please follow the steps in the Lightburn Calibration wizard.
If you have an Air assist accessory installed, the nozzle may have been knocked and is now blocking the laser. Please see the Aperture Nozzle Alignment info to determine if this applies to your situation and how to fix it if it does.
Have you changed your workflow recently?
- Don't forget to update your support and material height settings.
- Materials can vary slightly, even from the same supplier, you may need to adjust your settings.
If the problem is still not resolved or if you have any feedback for us please contact us at email@example.com