Omtech POLAR+ User Manual page 103

Solution
Use Compatible
Material
Calibrate the Laser Path
Some materials are not cuttable with the engraver. For recommended
§1.6 Material Safety Instructions
materials, see
When the laser path is misaligned, the laser performance may vary
significantly in different processing areas.
Contact our service to guide you on calibrating the laser path if the
solutions above don't work.
96
(Page 6).