Yes — CO2 is the laser for glass. Here’s why it works and where to get the full technique.
Short answer
Yes — a CO2 laser is the right tool for engraving glass. Its 10.6 µm wavelength is absorbed at the glass surface and frosts a thin layer into a bright white mark for logos, text, and photos on glassware, awards, and panels. It engraves the surface only — a CO2 laser (or any laser) cannot cleanly cut glass, which cracks from thermal stress. Fiber and diode lasers are the wrong tools for clear glass (the beam passes through). For the full technique — settings, the damp-paper trick, and rotary setups — see our complete glass-engraving guide.
CO2 is the laser for glass.
Glass absorbs the long CO2 wavelength well, so the beam micro-fractures a shallow top layer into a frosted, opaque-white mark — exactly the look you want for engraved glassware and awards. That is why CO2 is the standard choice for glass, while fiber (1064 nm) passes straight through clear glass and diodes only mark coated glass. Boss LS and HP CO2 systems handle glass well.
Get the full technique.
Glass engraving rewards a light touch — low power, high speed, a damp-paper cover to reduce chipping, and a rotary attachment for round items. The complete walkthrough, including photo engraving and the difference from 3D-crystal sub-surface work, is here: How do you laser engrave glass? Remember a CO2 laser engraves glass but does not cut it.
Related questions
Can a CO2 laser engrave glass?
Yes — CO2 is the right laser for glass. It frosts a thin surface layer into a bright white mark for logos, text, and photos. It engraves the surface only; it cannot cut glass, and fiber or diode lasers don’t work on clear glass.
How do you engrave glass with a CO2 laser?
Run low power and high speed to frost the surface, cover the area with damp paper to reduce chipping, and use a rotary attachment for round items like tumblers. Test on a similar piece first. See our full glass-engraving guide for settings and photo work.
Can you engrave glass with a CO2 laser without cracking it?
Yes — keep power low and speed high, lay damp paper over the area to dissipate heat, and avoid over-powering the mark. Those steps give a smooth frost with minimal chipping. Cutting glass, however, is not possible with a laser; it cracks from thermal stress.
Keep going
- Full guide: How do you laser engrave glass?
- Learn: Glass
- Related: Can a laser cutter cut glass? · What can a CO2 laser engrave?
- Products: LS / HP CO2 lasers