Original photo

Engraving Photos on Glass: Creating the black

Mike Fruciano is a Market Development Manager for Coherent Inc. Mike brings 25 years of laser systems, laser processing, and materials experience, and is a frequent writer and speaker on these topics. Contact Mike at 602-616-4971 or at mike.fruciano@coherent.com.

The first step in this unique photo engraving process is to learn the basics of using CerMark on glass. The product we are using is the LMM 6044 tile and glass marking CerMark. If you have experience with CerMark products, the 6044 tile and glass marking product works in a similar manner.

After cleaning the glass with regular glass cleaner and a clean cloth, shake the spray can for a minute then spray an even coat of the CerMark 6044 spray onto the glass. Use steady, even strokes for medium coverage with no thin spots. The CerMark will dry to the touch in five to 10 minutes and will be ready to laser engrave.

When it is time to laser engrave the coated glass, it will be the focused heat energy from the laser that fuses the CerMark onto the glass to create the black colored engraving. The areas that were not engraved by the laser can be washed off using water. The CerMark process for marking glass is a pretty simple one, but I always recommend trying a few test pieces first to get the hang of it before doing a production product.

—Mike Fruciano, Fruciano Consulting