How to laser engrave glass?

Laser engraving of glass is very easy: start by installing the rotating attachment on the laser to rotate the glass while engraving. Set up your image in CorelDRAW, Illustrator or other software as if you were printing on paper.

Laser engraving

on glass is a fairly simple process. Start by installing the rotating attachment on your laser machine to rotate the glass as it is engraved on it.

Apply a small amount of dish soap to the surface of the glass, taking special care not to let the soap get into either end of the glass. If soap is put on the ends, the wheels of the swivel attachment will not grip and the glass will rotate in place, causing the engraving to fail. In a nutshell, you will need a couple of tests before you become an expert in laser engraving on curved glass. A lower resolution or DPI (dots per inch) will surely produce a better icing effect because it records the dots away from each other.

You can also laser process the mirror glass with a fiber laser system by removing only the reflective layer on the back. Cheap molded glasses are well suited to laser technology because they generally offer a lower lead content as well as a more homogeneous structure. You won't be able to notice that the image being recorded was printed at a lower resolution, but it will produce a better result on the glass and prevent the glass from being roughly etched. Comparatively, the use of application tape will result in a grayish rather than bright white etch color.

A while ago I laser engraved my face on a set of drinking glasses in hopes of missing my new roommates. This trick will create a smoother result because the laser won't etch as deep as it would with 100 percent black. Masking involves applying a thin, damp sheet of newspaper or paper towel that is slightly larger than the engraving area before engraving. Therefore, when engraving curved items such as wine glasses, wine bottles and jugs, a rotating accessory will come in handy.

Usually the kit is plug and play and its most common uses are for engraving cylindrical objects such as bottles, glasses, cans, pens and glasses. Applying a thin layer of liquid dish soap to the area to be engraved (like the masking trick) will dissipate the heat produced by the laser, preventing the edges of the glass from becoming rough. Expensive hand-blown glass or glass can have stresses in the material that are aggravated by the heat of the laser beam during engraving, which can lead to fractures in the material. However, although the frosted appearance looks great, the laser can sometimes cause roughness or chipping on the glass.

The Trotec Speedy Flexx has an all-in-one CO2 and fiber laser source system, which means you can easily combine both processing techniques with a single laser machine.

Shana Lall
Shana Lall

General tv fanatic. Infuriatingly humble beer lover. General foodaholic. Incurable food fan. Typical travel fan.