There are several recommended methods for laser engraving glass and creating special effects. Here are just a few:
1. Dampened paper towel
Using a paper towel that is dampened with water will assist with preventing the laser engraving area from becoming rough, and it will also lead to clear, white engraving results.
Prior to starting your laser engraving job, apply a dampened single-layer paper towel to the glass workpiece and verify that there are no overlaps or air bubbles which could affect the engraved image. Turning the Air Assist to OFF will also prevent the paper towel from drying prematurely during the engraving process. Once the engraving is completed, any residue can be easily wiped off and the workpiece can be quickly cleaned.
2. Application tape
In addition to dampened paper towel, application tape can also assist with preventing the surface area of the workpiece from becoming rough. Comparatively, using application tape will result in a grayish engraving color instead of bright white. Just as with the paper towel method, ensure that no air bubbles or overlaps have formed when applying the tape, and post-engraving, simply clean the glass of any leftover residue.
3. Engraving without auxiliary materials
Dampened paper towel or application tape is a recommended processing technique, but is not required for laser engraving glass however. Effects can be created by making small adjustments, such as changing the graphic color from 100% black to around 70% gray. This will result in any effects from heat on large surfaces to be minimized, which will optimize your finished product. You can also go to the print settings, select the rasterization type “Ordered Dithering," but keep the same parameters. This will decrease the amount of heat that enters the material, as well as reduce the possibility of the surface becoming rough.