Metal Engraving & Marking

Yes — anodized aluminum is one of the few metals a CO2 laser marks well without any spray. The laser ablates the thin anodized (dyed oxide) layer to reveal the bright aluminum underneath, leaving a crisp light-on-dark mark with no consumables. It works because the laser is removing the coating, not marking the bare metal — which is why bare (non-anodized) aluminum still needs a marking spray or a fiber laser. Since you’re only removing a thin layer, run lower power and higher speed, and test on scrap first; too much power cuts into the aluminum and dulls the contrast. That combination of speed and contrast makes anodized aluminum a favorite for nameplates, asset tags, awards, and control panels on CO2 machines. Full answer →

Not bare metal directly — a CO2 laser’s 10.6 µm beam is reflected by bare steel, brass, and aluminum, so it won’t mark them on its own. The proven workaround is a metal marking spray or paste (CerMark, LaserBond, and similar): coat the clean part, run the laser to bond the coating to the surface, then wash off the excess to leave a permanent dark mark. It’s a real production process for logos, serials, and labels — it just adds a consumable and a couple of steps, and it bonds a mark to the surface rather than cutting into the metal. The one exception is anodized aluminum, which a CO2 laser marks directly. For fast, spray-free marking and true engraving on bare metal, a fiber laser is the right tool. Full answer →

Laser etching melts a very thin top layer of the metal, producing a permanent, slightly raised, high-contrast mark you can feel with a fingernail. It sits between annealing — a heat-only color change that leaves the surface smooth, the go-to for stainless and titanium — and engraving, which removes material to cut an actual recess. Etching is valued for its speed and contrast, which makes it a common choice for logos, 2D codes, and ID plates. Use a fiber laser, or a CO2 laser with marking spray, run higher power at moderate speed so the surface melts without cutting a deep cavity, and test on scrap of the same alloy first. Full answer →

Yes — stainless is one of the best metals for laser marking, and a fiber laser gives you all three mark types. It can anneal stainless for a smooth, dark, corrosion-safe color mark with no material removed; etch it for a fast, high-contrast raised mark; or engrave a real recess where the mark has to survive heavy handling. Deep engraving builds up over multiple passes rather than one high-power hit. A CO2 laser needs a marking spray to mark stainless, and a diode laser usually leaves only a faint, low-contrast surface mark on bare stainless — it can’t anneal the steel the way a fiber laser does. Full answer →

No — the mark is in the metal, not printed on it, so it won’t rub off or fade like ink. Annealed and etched marks survive normal handling, and engraving cuts a recess that survives heavy use and even refinishing. Removing a laser mark means working the surface itself away: shallow annealing or etching marks can sometimes be reduced by sanding, grinding, or polishing the surface back and refinishing, while a true engraved recess usually can’t be fully removed without machining away material. That permanence is exactly why lasers are the standard for serial numbers and tamper-resistant identification.

A fiber laser marker — it’s the industry standard for serial numbers, barcodes, 2D codes, and logos on tools and industrial parts. The marks are permanent, applied with no contact and no consumables, and the process is fast and repeatable enough for production traceability work. A 20–50 watt fiber marker covers the vast majority of ID work; step toward 50–100 watts for deep marks or faster throughput on harder alloys. Boss’s FM Series runs that full range, from the compact FM Desktop (20, 30, and 50 watts) to the FM Station (20, 30, 50, and 100 watts) for heavier production. Full answer →

Match the laser to the metal first. A fiber laser’s 1064 nm beam is absorbed by bare metal, so it anneals, etches, or engraves stainless, aluminum, brass, copper, and titanium directly; a CO2 laser needs a marking spray on bare metal; a UV laser does fine, low-heat marks on sensitive parts. Then it comes down to settings: set focus accurately before every job — metal marking is unforgiving of a bad focal point — choose the mark type (anneal for clean color marks, etch for fast contrast, engrave for depth), and balance power against speed, since more energy into the surface means a deeper, darker mark. Build deep engraving up over multiple passes, and always run a small test grid on scrap of the same alloy before committing to the part. Keep the metal flat and secured so the focal distance stays constant, with ventilation running and laser-safe eyewear on. Full answer →

For marking and etching most metals, a 20–50 watt fiber marker is the practical sweet spot and handles the vast majority of jobs. For deep engraving or faster throughput on harder alloys, step up toward 50–100 watts. Wattage is only part of the picture — beam quality, focus, and the metal itself matter just as much. As a rule of thumb, a hobby-class diode in the single-digit-to-low-double-digit watts is for marking coated or anodized surfaces, while genuine bare-metal engraving starts with a fiber laser. Full answer →

Not bare metal in the true sense. A 5 or 10 watt diode laser can mark some metals if they’re coated with a marking spray, anodized, or painted — the laser reacts with the coating rather than the metal itself. To engrave or anneal raw stainless, aluminum, or brass, you need a fiber laser, whose 1064 nm wavelength is actually absorbed by bare metal. If most of your work is metal ID, a 20–50 watt fiber marker is the tool the job calls for. Full answer →

You can get a mark on stainless with a diode laser, but the dependable method is a stainless marking spray or paste — the laser bonds the coating to the surface rather than working the bare metal. On bare stainless a diode usually leaves only a faint, low-contrast surface mark, and it cannot anneal the steel the way a fiber laser does. For fast, consistent, dark, production-grade marks on stainless, a fiber laser is the right tool. Full answer →

Brass is reflective and tough for low-power diodes. A diode laser can mark brass that has been coated with a marking spray, but it cannot engrave raw brass cleanly — the beam reacts with the coating, not the metal. A fiber laser marks and engraves brass directly, no coating needed, which is why it’s the standard choice for brass plates, tags, and hardware. Full answer →

It depends on the depth of the mark. Shallow annealing or etching marks sit at or just below the surface, so they can often be reduced or removed by sanding, grinding, or polishing the surface back, then refinishing to match. True engraving cuts a recess into the metal, so it usually cannot be fully removed without machining away material and refinishing the part. That difficulty is exactly why engraving is chosen when a mark must be permanent and tamper-resistant. Full answer →