FirearmsModule 6.6~6 min read

Cerakote Ablation: Coating-Removal Engrave Workflow

Cerakote ablation is the cross-platform technique that produces the high-contrast "white-on-color" mark on Cerakoted, Duracoated, or Armor-Tuff'd firearms, knives, and accessories. The mechanics are simple: the 1064nm fiber beam vaporizes the ceramic-polymer coating and reveals the substrate underneath. The execution is where shops get into trouble, because what was a sealed corrosion-resistant surface is now bare metal in the engrave area. This module is the synthesis layer that the slide / receiver / handguard modules cross-reference. Read Firearms Engraving Primer first for the broader liability framework.

Ablation exposes bare metal; bare metal corrodes

Cerakote, Duracoat, Armor-Tuff, KG Gunkote, and similar firearm coatings are corrosion barriers. Ablating the coating in the engrave area exposes the substrate (carbon steel, stainless, aluminum, or polymer) to the same environment the coating was protecting it from. Carbon steel slides will rust in the engrave area within months in a humid environment if left untreated. Stainless and aluminum are more forgiving but not immune. Standard professional practice is to engrave BEFORE coating, then re-coat over the engrave so the engrave is sealed under fresh coating. If you must ablate through an existing coating. Get explicit written customer acknowledgment that the engrave area has reduced corrosion resistance and may need touch-up coating or refinishing.

Two workflows: pre-coat vs post-coat

Workflow	How it works	When to use it
Pre-engrave (recommended)	Engrave the bare substrate first, then send the part to a Cerakote applicator (or coat in-house if you offer that service). Fresh coating fills and seals the engrave area; the mark reads as a slightly raised or recessed shadow under the coating depending on engrave depth.	New builds, refinishing projects, any job where the part is going to a coater regardless. Highest corrosion durability. Most professional-shop default.
Post-coat ablation	Engrave directly through an existing factory or aftermarket coating. The ablated area reveals the substrate's color (silver on carbon steel, gray on stainless, raw aluminum on AL-substrate).	Already-coated parts where re-coating isn't desired, customer wants the high-contrast white-on-color look, drop-in service work without coater partnership. Lower corrosion durability; requires acknowledgment language.

Most shops offer both. The pre-engrave path is the right answer for any customer who values long-term durability; post-coat ablation is the right answer for the customer who wants the look and accepts the trade-off.

What Cerakote is, briefly

Cerakote (NIC Industries product line) is the dominant ceramic-polymer firearms coating. H-Series cures oven (180-250°F for 2 hours or 300°F for 1 hour, per NIC TDS), typically 0.5-1.0 mil / 12-25 µm applied thickness) is the most common firearm formulation. C-Series is the air-cured variant. Duracoat (Lauer Custom Weaponry) is the major competing product with similar polyurethane-based chemistry. Wilson Combat's Armor-Tuff, KG Industries' Gunkote, and several smaller-vendor coatings behave similarly under 1064nm ablation. The ablation technique transfers across coatings; the exact starting settings shift slightly with thickness and pigment load.

Settings by substrate (under the coating)

Starting points for ablation through a typical H-Series Cerakote layer. Always test on the rear or inside of the part first because coating thickness varies by 30-50% across the same part depending on applicator technique. 30W MOPA + 70mm lens unless noted.

Substrate	Speed	Power	Freq	Pulse	Passes	Notes
Carbon steel (1911, AR receiver, slides)	1500-2500 mm/s	25-45%	35-50 kHz	200 ns	1-2	Standard recipe. Single pass at low power often enough for thin Cerakote; 2 passes for heavy coats.
Stainless steel	1500-2500 mm/s	30-50%	35-50 kHz	200 ns	1-2	Slightly more power than carbon because stainless reflects more 1064nm at low power.
Aluminum (handguards, optic housings, lowers)	1800-2800 mm/s	20-35%	30-50 kHz	100-200 ns	1	Aluminum is soft; one pass at low power is plenty. Higher power risks scoring through anodize into bare aluminum.
Titanium	1200-2000 mm/s	30-50%	35-60 kHz	200 ns	1-2	Less common but seen on premium custom work and some suppressor tubes.
Polymer substrate (Cerakoted polymer frames, occasionally)	2000-3000 mm/s	15-25%	50-100 kHz	20-80 ns	1	Rare but real: some shops Cerakote polymer frames. Ablation is delicate; too much energy melts the polymer underneath. Test extensively.

For 60W MOPA: drop power 30-40% as a starting point relative to the 30W numbers above. The 60W's higher average power makes substrate scoring much more likely on a single pass.

The "white-on-color" contrast story

The visual that sells this work: a deep matte-color slide (FDE, OD green, Sniper Grey, Tactical Grey, Burnt Bronze) with crisp bright-silver text revealed by the laser. The contrast comes from the substrate showing through.

On dark Cerakote (Graphite Black, Sniper Grey, Patriot Brown): silver-on-dark contrast is highest. The headline product.
On medium-light Cerakote (FDE, Tactical Tan, Coyote Tan): silver-on-tan contrast is moderate. Still readable, less dramatic.
On bright Cerakote (Crimson Red, USMC Red, NRA Blue): silver-on-bright can read muddy because bright pigment and bright substrate compete. Test before committing.
On stainless substrate: contrast is lower than on carbon steel because the revealed stainless is also gray-toned. Premium Cerakote-over-polished-stainless work usually accepts this trade for the durability gain.

Common pitfalls

Scoring the substrate: too much power or too many passes cuts a visible groove into the metal under the coating. Bad for cosmetics and for any future re-coating (the coater will need to fill the groove). Drop power 5% and re-test.
Inconsistent coating thickness: the same recipe produces different ablation depths across the same part. Always test on a hidden zone of the actual part, not on a separate coupon, because applicator technique varies.
Edge chipping: aggressive ablation at the design edges can chip the surrounding coating, leaving a feathered halo. Cross-hatch (0° + 90°) reduces this; slower speed at lower power also helps.
Residue: ablated coating leaves a fine particulate residue on and around the engrave. Wipe with isopropyl alcohol and a lint-free cloth before packaging.
Wrong coating identification: Duracoat, Cerakote, Armor-Tuff, KG Gunkote, GunKote, and aftermarket spray-paint look similar to the eye but ablate differently. If the customer can't confirm the coating, refuse the job or charge a discovery premium.
Fume management: ablated Cerakote releases ceramic particulate and decomposed polymer; both should not be inhaled. Use HEPA + activated carbon extraction (BOFA, Purex Alpha, equivalent). Venting outside alone is insufficient.

When to refuse the job

Mystery coatings: the customer doesn't know what was applied or by whom. Risk of unpredictable ablation behavior and potential toxic-decomposition products from spray-paint or non-firearms coatings.
Flaking or peeling coatings: indicates poor surface prep at the original coater. Ablation will accelerate the failure. Refuse and recommend re-coating before engraving.
Old / weathered Cerakote on a humidity-exposed firearm: existing micro-corrosion under the coating becomes visible after ablation and looks like engrave artifacting. Set expectations or refuse.
Already-engraved coatings (customer wants to re-do or extend an existing engrave): the prior engrave area's coating is likely degraded; new ablation will look uneven against the old work. Recommend strip + re-coat + engrave from scratch.
Painted parts (not coatings): spray-painted firearms decompose differently under 1064nm and can release significantly more toxic fume than Cerakote. Refuse painted parts categorically.

Customer comms script

Drop-in language for your intake or proof process. Adjust for your shop's voice; the key is that the customer signs something acknowledging the corrosion trade-off before you cut into their part.

Sample acknowledgment language

"Laser engraving through your firearm's Cerakote / Duracoat / [coating name] coating will remove the coating in the engraved area, exposing the bare metal beneath. The exposed metal has reduced corrosion resistance and may rust, oxidize, or discolor over time depending on the substrate and storage conditions. To restore full corrosion protection, the part can be touched up with matching coating or fully re-coated. Touch-up and re-coating are separate services. By signing below, you acknowledge this trade-off and accept the engrave as-is without further obligation from [shop name]."

Pair with the standard liability template from Customer Communication & Proofing and the broader risk-tier pricing math in Customer-Supplied Pricing.

Pricing

See the consolidated Firearms pricing reference in the Firearms Engraving Primer.

Cross-references

Settings are community-validated starting points, not guarantees. Cerakote and equivalent coating chemistries are proprietary; applied thickness varies by applicator. Always test ablation on a hidden zone of the actual part before running on the visible area. Corrosion exposure on bare-metal ablation is a known trade-off; written customer acknowledgment is the professional standard.