Laser Engraving Services

Quick Answer: Laser marking and laser engraving describe two different penetration depths. Marking removes only microns of material from the surface — typically a coating like anodize, paint, or oxide — while engraving cuts mils-deep (thousandths of an inch) into the substrate itself. The practical engraving limit on a fiber laser system is roughly .015 to .020 inches; beyond that, traditional rotary mechanical engravers usually do the job better.

The terms get used interchangeably, but in our job shop they describe four distinct techniques, each with its own laser parameters and best-fit applications.

Laser ablation removes a coating from the surface — anodize from aluminum, paint from steel, the metallic film on a coated plastic — without cutting into the base material. Marking depths are measured in microns. Ablation is the right technique for nameplates, bar codes on coated stock, and any application where the goal is contrast against an existing surface finish.

Laser engraving cuts deeper, into mils of material, and is the right call when the mark has to survive abrasion, accept color fill, or meet a depth specification. Federal regulations require firearms serial numbers to be engraved to a minimum depth of .003 inches under 27 CFR 478.92; in our job shop experience the .003 to .005 inch range is the working window for receivers and slides that need to pass inspection.

Stain marking applies only to stainless steel and titanium. The laser heats the surface enough to form a dark oxide layer without removing material. Stain marks are non-contaminating, which is why they're standard on medical instruments — no inks, no chemicals, microns of penetration.

Dark marking is the technique used on bare aluminum, brass, and copper, where parameter changes (speed, power, pulse frequency) produce a dark mark on otherwise bright metal without an oxide layer.

All four techniques are routine in the Jimani job shop, but the wrong technique on the wrong material wastes time on every quote — which is why technique selection happens during quote setup, not at the laser.

Quick Answer: Jimani marks every metal — bare, plated, painted, or anodized — including stainless steel, titanium, aluminum (including hard anodize), brass, copper, and most steels with our fiber laser systems. Wood, glass, leather, organic materials, and most plastics are marked with our CO2 systems. The material decides the laser, not the other way around.

Different lasers emit different wavelengths, and different materials absorb different wavelengths. Fiber lasers operate at 1064 nm — the wavelength metals absorb well, which is why fiber is the right tool for metal applications. CO2 lasers operate at 10,600 nm, which is what wood, glass, and most organic materials absorb. There is some overlap on plastics, where the answer depends on the polymer chemistry and the desired result.

For metals, fiber laser marking and engraving works on every common production substrate we see in the job shop: anodized aluminum (clear, dyed, hard), stainless steel, titanium, hardened tool steel, brass, copper, nickel-plated parts, painted parts, and powder-coated surfaces. For CO2 substrates the most frequent work is wood (signage, awards, branded items), glass (etched glassware, optics), leather (branded goods, holsters), and organic materials like cork, paper, and certain composites.

Plastic is a case-by-case material. Some plastics mark cleanly with a fiber laser, some are better matched to a CO2 system, and some won't mark well with either without a laser-additive in the resin. After more than thirty years of running the same fiber and CO2 platforms in the job shop, our default on plastics is to mark a sample before quoting — it's faster than trying to predict the result from the data sheet.

For material-specific details, see our pages on aluminum marking, stainless steel marking, glass marking, wood marking, and leather marking.

Quick Answer: Yes. We mark up to 60 degrees around the circumference of a one-inch-diameter cylinder without rotating the part, and up to 160 degrees with software projection correction enabled. Anything beyond that requires rotary tiling, which breaks the graphic into tiles and aligns them precisely as the part rotates under the lens. Full 360-degree marking on cylindrical parts is routine.

The 60-degree rule is a function of depth-of-focus, not part diameter alone. As the laser beam moves away from the top of a cylindrical surface, it also moves away from the optimum focal point of the f-theta lens. The focused spot grows, power density drops, and at some point the mark starts to fade or distort. With software projection correction enabled in Prolase, we can extend the usable wraparound to about 160 degrees on a one-inch-diameter part. Beyond that, the part has to rotate.

For full-circumference work — thermal mugs, pen barrels, surgical tool handles, cylindrical pressure vessels — we use rotary tiling. Our primary method is a DCA (Direct Coupled Axis) configuration: a Clearpath servo motor with a Sherline chuck coupled directly to the motor shaft. The DCA setup has shorter settling times and faster indexing than a traditional worm-gear-driven indexer, which matters when production volumes climb into the thousands per week. The trade-off is lower payload, so heavier parts still go on our worm-gear-driven Sherline rotary indexer.

The kerf width on a fiber laser line is .002 to .003 inches, which is also the alignment tolerance for clean rotary tiling — consecutive tiles have to land within a single kerf width or the seams become visible. Our Sherline rotary indexers run at 144,000 steps per 360 degrees of revolution (per Sherline indexer specifications), which provides the precision required for seamless wrap-around marking on production runs.

For more on cylindrical part marking, see Laser Marking 201.

Quick Answer: The practical engraving depth limit on a fiber laser marking system is .015 to .020 inches. Going deeper is mechanically possible but rarely the right tool — the laser beam begins to defocus as the trough deepens, and vaporized material can't escape from a narrow trough, leaving slag on the sidewalls and bottom. For deeper applications, rotary mechanical engravers usually do cleaner work in less time.

The mechanism is straightforward. As a fiber laser cuts deeper into a metal substrate, two things happen at once. The focal point of the lens, set at the original surface, no longer matches the depth being cut — the beam loses power density as the trough deepens. At the same time, vaporized material has nowhere to go in a narrow engraved line. Some of it redeposits on the trough walls and edges as slag.

The technique that produces the cleanest deep engraving is multiple high-speed passes with rotated fill angles, not a single slow pass. Marking speeds of 5 to 10 inches per second across several passes at different fill orientations remove material in thin slices and let the vapor clear between passes. Slow single-pass engraving — the intuitive approach — produces a slaggy bottom and rough edges. The narrower the engraved line width, the more pronounced the slag problem becomes; about .020 inches is the practical limit for narrow-line deep engraving.

Firearms compliance marks at .003 to .005 inches deep are well within fiber laser capability and a routine job shop request — Jimani has handled depth-spec firearms work for receivers, slides, and components for decades. Defense applications that require more depth or specific mark formats get an engineering review before quoting; that's not a refusal, it's a setup acknowledgment.

Quick Answer: Jimani is AS9003 compliant and routinely produces UID-compliant marks for defense (MIL-STD-130 IUID 2D matrix codes), aerospace traceability marks aligned to AS9100 supplier requirements, the non-contaminating stain marks used on medical instruments, and depth-compliant firearms serial engravings under 27 CFR 478.92. The job shop serves aerospace, medical device, automotive aftermarket, defense, firearms, ad specialty, and general industrial manufacturers — all from the same Oxnard facility.

Compliance marking has a few common failure modes that show up in the job shop. UID 2D matrix codes have to pass read-rate verification per MIL-STD-130 and AIM DPM-1-2006, which means contrast, cell size, and quiet zone all have to be specified correctly before the first part is marked. Aerospace traceability marks generally have to survive post-mark surface treatment (anodize, plating, passivation) without losing legibility — that's a setup question, not a marking question. Medical instrument marks have to be non-contaminating, which is why stain marking on stainless and titanium is the standard for that industry.

The customer mix tells the story of what fiber and CO2 marking actually get used for in production. Aerospace and defense customers send precision machined components requiring traceability marks. Medical device manufacturers send surgical instruments needing non-contaminating stain marks. Automotive aftermarket customers send performance parts and replacement components. Firearms customers send receivers and slides requiring depth-compliant serialization. Ad specialty customers send high-volume runs of branded drinkware, awards, and hardware.

Because Jimani holds AS9003 and has worked with customers in defense, aerospace, and medical going back decades, the documentation and process discipline are already in place. The result is that customers don't ask whether we can hold the standard; they ask whether the part will pass — which is the right question.

For industry-specific details, see the dedicated pages: industrial laser marking, medical device marking, automotive aftermarket marking, UID/defense marking, firearms marking, and ad specialty marking. For real customer outcomes, see our success stories.

Quick Answer: The fastest way to get a quote is to email a part drawing (DXF, AI, vector PDF, or most common CAD formats) along with the material, quantity, and any compliance specs (UID, MIL-STD, AS9100, FDA). For more involved jobs, ship a sample part to the Oxnard facility and we'll mark it for evaluation before quoting the full run. There is no setup or sample charge for evaluation marks on most jobs.

What to include in a quote request: the material and any surface treatment (anodize, paint, plating), the quantity (one-off, batch, recurring), the type of mark (text, logo, serial, 2D matrix), the location and size of the mark, and any compliance specs the part has to meet. If the artwork is a logo or graphic, send the highest-quality vector file you have — bitmap logos can be marked, but vector files produce cleaner results and faster cycle times.

For evaluation samples, ship to:
Jimani, Inc.
1730 Fiske Place
Oxnard, CA 93033

NDAs are available on request for sensitive parts and proprietary designs. For straightforward quote questions, call (805) 486-1399 ext. 2 or send us a message.

Most of our long-term customers came in the same way — with one part and a question. We mark it, send it back, and let the part speak for itself. That's been the pattern since 1990, and it's still the fastest way to find out whether laser marking is the right answer for the application.