If you are searching for 'laser cutting examples' or asking 'what can a laser engraver do,' here is the short answer: Most fiber and CO2 lasers can flawlessly mark metals, engrave plastics, cut up to 1/4-inch plywood, and etch stone. But the reality of industrial laser processing is full of material gotchas and costly assumptions. This list comes from documenting 47 significant mistakes over the past 18 months.
Why This List Exists (And Why You Should Trust It)
I handle production orders for a laser job shop. In my first year—back in 2021—I approved a $3,200 order for 500 engraved aluminum nameplates. The spec sheet said 'suitable for laser marking.' The result? 500 pieces with inconsistent contrast and a chemical reaction that made the text blurry after 48 hours. Straight to the trash.
Looking back, I should have run a longer aging test. At the time, the supplier's sample looked perfect. That was the beginning of my 'what can a laser engraver do' obsession—specifically, what it can't do reliably without the right setup.
The Definitive List: Laser Cutting & Engraving Examples
Here is the breakdown based on my experience with fiber (20W-100W), UV (like the Omni X), and CO2 lasers. I've organized it by material and outcome.
Metals (Fiber & MOPA Lasers)
What works: Stainless steel, carbon steel, aluminum, titanium, and brass all mark beautifully with a fiber laser. The best results I've seen are on anodized aluminum—the laser removes the anodized layer to reveal the white base. It's high contrast and permanent.
One laser cutting example: Thin stainless steel (0.02 inches) can be cut with a 100W fiber laser. It leaves a clean edge but requires a gas assist (nitrogen) to prevent oxidation. We cut 2,000 shims this way last year. Worked well.
The gotcha: Copper and gold are tough for standard fiber lasers. The wavelength reflects. You need a MOPA or a green laser. I learned this by ordering 100 copper tags. The laser barely made a mark. $280 wasted.
Plastics (CO2 & UV Lasers)
What works: Acrylic (Plexiglass) cuts beautifully with a CO2 laser. Clean edges, almost polished looking. Polycarbonate, on the other hand, is a nightmare. It absorbs the CO2 wavelength and burns, giving a yellow, smoky edge. UV lasers handle it better, but it's slow.
One laser engraving example: Nylon keychains with a UV laser (Omni X). The result is a deep, white mark with no melting. We switched from mechanical engraving to this method. Production time per unit dropped by 60%.
The gotcha: PVC (vinyl) should never go near a laser. It releases chlorine gas. It will destroy your laser tube and your lungs. I had a client inquire about it once. I refused the job. It's a hard rule now.
Wood & Organic Materials (CO2 Lasers)
What works: Plywood (up to 1/4 inch), MDF, balsa, and cork all cut and engrave impeccably. The key difference between a CO2 and a fiber laser here: CO2 is the clear winner. Wood is transparent to the fiber wavelength.
One laser cutting example: Birch plywood, 3mm thick, at 80% power on a 100W CO2 laser. The cut is clean with minimal charring on the bottom edge. We made 500 pieces for a furniture prototype this way.
The gotcha: Exotic woods (like cocobolo or rosewood) are oily. They can catch fire easily. You need to reduce speed and power, and always have an air assist on. I learned this one the hard way—a small fire in the machine in 2022. No damage, but I had to evacuate the shop for 30 minutes.
Glass & Stone
What works: Glass engraves (frosts) with a CO2 laser. Stone (granite, slate) marks with a dark contrast. The 'laser cutting examples' for glass are mostly etching; actual cutting is difficult and usually results in stress fractures.
One laser engraving example: Slate coasters with a 60W CO2 laser. The mark is white, deep, and incredibly crisp. We did a batch of 200 for a wedding favor order. The client was ecstatic.
The gotcha: Tempered glass will shatter if engraved. It seems obvious in retrospect, but I didn't know. The order was for custom wine glasses, and the first one exploded in the machine. We switched to using a rotary attachment and annealing the glass first (which is a whole different process).
The 'Cannot Do' List (My Personal Mishaps)
Diamond-like coatings (DLC): I tried engraving a DLC-coated stainless steel watch. The fiber laser just bounced off the coating. Nothing. I learned later you need a UV laser for that specific application. The Omni X would have handled it, but we didn't have one then.
Transparent plastics (for marking): Standard CO2 lasers will pass right through clear acrylic without marking it. You need a UV laser or a specific additive in the plastic. I've spent about $300 in sample materials figuring this out.
High-reflectivity metals (pure copper, silver): A standard fiber laser can't handle pure copper or silver. The beam reflects and can damage the laser source. You need a MOPA or a fiber laser with a back-reflection protection module. I know a shop that ruined a laser head this way. It was a $2,000 repair.
Some Honest Fine Print
This list is based on my specific setups (commarker B4 20W fiber, a refurbished 60W CO2, and a rented Omni X UV). Your results will vary based on:
- Laser power (20W fiber vs 100W fiber are different tools)
- Focus lens (a 1.5 inch lens vs a 4 inch lens dramatically change kerf and depth)
- Air assist type (compressed air vs nitrogen for metal cutting changes edge quality)
- Material sourcing ('acrylic' from one supplier may absorb laser differently than 'acrylic' from another)
If you are trying to cut or engrave something I haven't listed here, do this: Buy a small sample piece, run a power/speed grid test, and always—always—do a 24-hour environmental test before committing to a full production run. I've added this to my team's checklist after the 2021 aluminum nameplate disaster. We've caught 47 potential errors using that checklist in the past 18 months.
Honestly, the most honest 'laser cutting examples' are the ones you run yourself on your machine with your material. My list is a guide, not a guarantee.
