The short answer is no — but a CO2 laser can engrave glass beautifully. Here’s the difference and what to use to cut it.
Short answer
No — a laser cutter cannot cleanly cut glass. The beam’s heat creates thermal stress that cracks and chips glass instead of cutting a clean edge, so glass is not a laser-cut material. What a CO2 laser can do is engrave (frost) the surface of glass for logos, text, and photos. To cut glass to shape, use mechanical methods — a glass scorer and score-and-snap, or a wet saw. This is true across laser types: no common shop laser cuts glass, and tempered glass is especially prone to shattering.
Why a laser can’t cut glass.
Glass is brittle and conducts heat poorly, so the concentrated heat of a laser builds up stress at the beam and the glass cracks, chips, or shatters rather than parting cleanly. There is no power or speed setting that turns this into a clean cut — it is a property of the material, not a limitation you can dial out. Tempered glass is the worst case: the built-in stress makes it shatter completely.
What a CO2 laser can do: engrave glass.
While it can’t cut glass, a CO2 laser engraves glass very well — frosting a thin surface layer into a bright white mark for logos, text, awards, and photos. If your goal is to decorate glassware or panels rather than cut them, that is the right process. See our full guide: How do you laser engrave glass?
How to actually cut glass to shape.
To cut glass, use the mechanical methods made for it: a glass scorer and score-and-snap for straight lines, or a wet saw with a diamond blade for thicker or shaped cuts. Cut the glass to size first with those tools, then bring it to the laser for engraving if you want a decorated, finished piece.
Related questions
Can a laser cutter cut glass?
No. The beam’s heat creates thermal stress that cracks and chips glass instead of cutting a clean edge, so glass is not a laser-cut material. A CO2 laser can engrave (frost) glass, but cutting glass to shape needs mechanical tools.
Can you cut glass with a laser cutter / on a laser cutter?
No. There is no setting that makes a laser cut glass cleanly — it cracks from thermal shock. Use a glass scorer and score-and-snap, or a wet saw, to cut glass, and use a CO2 laser only to engrave it.
Can a laser engraver cut glass?
No. A laser engraver can frost (engrave) the surface of glass, but it cannot cut through it. Cutting glass requires mechanical methods; the laser is for the decorative surface mark only.
How do you cut tempered glass with a laser?
You don’t — tempered glass is the worst case for a laser. Its built-in stress makes it shatter completely under the heat, and tempered glass also can’t be cut mechanically after tempering. It must be cut to size before it is tempered.
Can the same laser cut glass and metal?
No. Cutting metal needs a fiber laser, and glass can’t be laser-cut at all (only engraved, on a CO2 laser). No single common shop laser cuts both glass and metal — they are different jobs and, for metal, a different machine.
Can you laser engrave glass instead?
Yes — that is what lasers are good at on glass. A CO2 laser frosts a clean surface mark for logos, text, and photos. See our guide on how to laser engrave glass for settings and the chip-free technique.
Keep going
- Related guide: How do you laser engrave glass?
- Related: Can a CO2 laser engrave glass? · Can a fiber laser engrave glass? · What materials can a laser cutter cut?
- Products: LS / HP CO2 lasers