Rough engravings may be formed on glass due to the impact of the laser beam's heat on the glass' surface. The following are a few commonly used methods to prevent this phenomenon:
Moist Paper Towel
White engravings are achieved with the use of a moist paper towel.
Prior to engraving your workpiece, apply a moist single-layer paper towel to its surface. Ensure that there are no air bubbles or overlaps, which would diminish the engraving quality. Turn the Air Assist function off to avoid drying the paper towel while the workpiece is being engraved. When the laser processing is complete, you can wipe away residual paper towel fragments with a damp cloth
The use of application tape results in grey-coloured engravings.
As with the paper towel method, make sure that no air bubbles and overlaps are formed. Pieces of tape or adhesive that remain after processing can be removed with a damp cloth.
Engraving Without Supplementary Materials
The impact of the laser beam's heat on your glass workpiece can be reduced by configuring the design in your graphics software or on JobControl®.
In your graphics software file, change the design's colour from 100% black to 70% grey before sending it to JobControl®.
In the JobControl® Print window, select the OrderedDithering option from the Halftone menu. Keep the same processing parameters for all other settings.