Laser Settings for Leather: Engraving & Cutting Guide
Leather is one of the most rewarding materials to laser engrave, producing rich, permanent marks on wallets, keychains, belts, and more. This guide covers tested baseline settings for vegetable-tanned leather on popular diode and CO2 laser machines so you can get clean results on your first try.
Do NOT laser these materials — toxic fumes
- ×PVC / vinyl — releases chlorine gas (hydrochloric acid)
- ×Chrome-tanned leather — releases hexavalent chromium (carcinogen)
- ×Polycarbonate (Lexan) — produces bisphenol A fumes and discolors badly
- ×ABS plastic — emits hydrogen cyanide when laser cut
Always verify your material before cutting. When in doubt, check the MSDS sheet or ask your supplier.
Critical Safety Warning: Chrome-Tanned Leather
NEVER laser chrome-tanned leather. It releases hexavalent chromium (Cr VI), a known carcinogen, when heated.
- •Only use vegetable-tanned (plant-tanned) leather for any laser work. This is sometimes labeled "veg-tan" or "bark-tanned."
- •How to tell the difference: Ask your supplier directly. Chrome-tanned leather is often blue or gray on the back (flesh side), while vegetable-tanned leather is a natural tan or brown throughout.
- •If you are unsure, do not laser it. No project is worth the health risk.
- •Ensure proper ventilation. Even safe vegetable-tanned leather produces strong-smelling fumes when lased. Always use an enclosure with exhaust or work in a well-ventilated area.
Understanding Leather Laser Settings
Getting good results on leather depends on understanding how the material reacts to laser energy. Here are the key factors:
- •Leather type matters most — Vegetable-tanned leather is safe and engraves beautifully. Chrome-tanned leather is toxic when lased. Always verify your leather type before starting.
- •Thickness variations — Leather for laser work typically ranges from 1 mm to 4 mm. Thinner leather needs lower power to avoid burning through; thicker leather requires more passes for cutting.
- •Diode vs CO2 — Both laser types work on leather. CO2 lasers produce cleaner cuts, especially on thicker material. Diode lasers handle engraving well and can cut thin leather (1-2 mm).
- •Air assist — Use low pressure or turn air assist off for engraving. High air pressure can cause white marks on the leather surface, reducing contrast.
- •How leather reacts — Leather darkens when lased because the laser burns away the top surface layer. The depth and darkness of the mark depend on power and speed.
Diode Laser Settings for Leather (Engraving)
Settings below are tested starting points for 2 mm vegetable-tanned leather. Adjust power down for thinner leather or lighter marks.
xTool S1 20W
| Thickness | Speed mm/s | Power % | Passes | Operation |
|---|---|---|---|---|
| 2 mm | 600 | 50 | 1 | Engrave |
xTool D1 Pro 20W
| Thickness | Speed mm/s | Power % | Passes | Operation |
|---|---|---|---|---|
| 2 mm | 600 | 45 | 1 | Engrave |
xTool D1 Pro 10W
| Thickness | Speed mm/s | Power % | Passes | Operation |
|---|---|---|---|---|
| 2 mm | 400 | 50 | 1 | Engrave |
xTool S1 40W
| Thickness | Speed mm/s | Power % | Passes | Operation |
|---|---|---|---|---|
| 2 mm | 800 | 35 | 1 | Engrave |
Sculpfun S30 Pro Max 20W
| Thickness | Speed mm/s | Power % | Passes | Operation |
|---|---|---|---|---|
| 2 mm | 500 | 45 | 1 | Engrave |
Sculpfun SF-A9 40W
| Thickness | Speed mm/s | Power % | Passes | Operation |
|---|---|---|---|---|
| 2 mm | 800 | 30 | 1 | Engrave |
Atomstack X20 Pro 20W
| Thickness | Speed mm/s | Power % | Passes | Operation |
|---|---|---|---|---|
| 2 mm | 600 | 40 | 1 | Engrave |
Atomstack A5 Pro 5W
| Thickness | Speed mm/s | Power % | Passes | Operation |
|---|---|---|---|---|
| 2 mm | 300 | 60 | 1 | Engrave |
Ortur Laser Master 3 10W
| Thickness | Speed mm/s | Power % | Passes | Operation |
|---|---|---|---|---|
| 2 mm | 400 | 50 | 1 | Engrave |
Creality Falcon 2 22W
| Thickness | Speed mm/s | Power % | Passes | Operation |
|---|---|---|---|---|
| 2 mm | 600 | 45 | 1 | Engrave |
LONGER Ray5 20W
| Thickness | Speed mm/s | Power % | Passes | Operation |
|---|---|---|---|---|
| 2 mm | 550 | 42 | 1 | Engrave |
TwoTrees TS2 10W
| Thickness | Speed mm/s | Power % | Passes | Operation |
|---|---|---|---|---|
| 2 mm | 400 | 50 | 1 | Engrave |
CO2 Laser Settings for Leather (Cutting & Engraving)
CO2 lasers excel at cutting leather cleanly. The engraving rows use much lower power since CO2 wavelength is highly efficient on organic materials.
OMTech 40W CO2
| Thickness | Speed mm/s | Power % | Passes | Operation |
|---|---|---|---|---|
| 3 mm | 30 | 40 | 1 | Cut |
| — | 300 | 15 | 1 | Engrave |
OMTech 50W CO2
| Thickness | Speed mm/s | Power % | Passes | Operation |
|---|---|---|---|---|
| 3 mm | 35 | 35 | 1 | Cut |
| — | 350 | 12 | 1 | Engrave |
Tips for Laser Engraving Leather
- •Lower power produces a lighter mark; higher power burns deeper and darker. Adjust in 5 % increments to find the contrast you want.
- •Always test on a scrap piece first. Every leather batch behaves differently depending on tanning, dye, and moisture content.
- •Dampen the leather slightly before engraving for cleaner edges and reduced smoke staining around the engraved area.
- •Mask the surrounding area with painter's tape to keep smoke residue off the leather surface and maintain clean borders.
- •The distance between scan lines (line interval) affects how the engrave looks. Closer lines create a deeper, more uniform appearance.
- •A resolution of 254-300 DPI works well for most leather engraving. Higher DPI increases job time without noticeable improvement on leather's textured surface.
Tips for Laser Cutting Leather
- •CO2 lasers are recommended for cutting leather. They produce cleaner, lighter-colored edges compared to diode lasers.
- •Diode lasers can cut thin leather (1-2 mm) but the cut edges tend to darken significantly. Use the lowest power that cuts through.
- •Multiple light passes produce better results than one heavy pass. This reduces heat buildup and edge discoloration.
- •Pin leather flat to your work surface. Leather curls when heated, which lifts it out of focus and causes uneven cuts.
- •Air assist helps prevent flames on thicker leather pieces. Use moderate pressure for cutting (unlike engraving where low or off is preferred).
Types of Leather for Laser Work
Not all leather is created equal when it comes to laser processing. Here is a breakdown of common types:
Vegetable-Tanned LeatherSafe
Safe for laser work. Light natural color that produces excellent contrast when engraved. The standard choice for laser leather projects. Available in various thicknesses from craft stores and leather suppliers.
Chrome-Tanned LeatherToxic — Do Not Laser
DANGEROUS — never laser this material. Releases hexavalent chromium (a carcinogen) when heated. Chrome-tanned leather makes up roughly 80-90% of commercially available leather, so always verify before assuming safety.
SuedeSafe
Can be lasered if vegetable-tanned, but results are fuzzier due to the napped surface. Engraving contrast is lower than on smooth leather. Best for subtle, textured designs.
Faux Leather / PU Leather
Polyurethane-based faux leather is generally safe to laser but test a small piece first. Avoid PVC-based faux leather — it releases hydrochloric acid gas when heated, which is toxic and corrosive to your machine.
Bonded Leather
A mix of leather fibers and synthetic binding agents. Results are inconsistent because the composition varies. Test thoroughly and check that no PVC is present in the binding material.
Popular Leather Laser Projects
Leather laser work is popular for personalization and small-batch production. Common projects include:
Troubleshooting Leather Laser Problems
White marks on engraved area
This is almost always caused by air assist being too strong. Turn air assist to low pressure or off entirely when engraving leather. The high airflow blows away the charred material before it can set, leaving white instead of dark marks.
Not cutting through
If your diode laser is not cutting through leather, the material may be too thick for your wattage. Leather thicker than 2 mm is difficult for most diode lasers. Switch to a CO2 laser for thicker stock, or add more passes at moderate power rather than cranking to maximum.
Uneven engraving depth
Leather thickness naturally varies across a single piece. Check that the material is pinned flat and that your focus distance is set correctly. If the surface is uneven, the laser focus shifts and produces inconsistent depth.
Strong smell during operation
A strong smell is normal when lasering leather, even vegetable-tanned leather. Ensure your enclosure exhaust is working and that you have adequate room ventilation. If the smell is unusually chemical or acrid, stop immediately and verify that the leather is not chrome-tanned.
What the Research Says
Key findings from peer-reviewed studies on laser cutting and engraving leather.
Diode Laser Kerf Width
A study using a 450 nm blue diode laser (NEJE 3 Plus) on 1.2 mm vegetable-chrome tanned buffalo leather found remarkably consistent kerf widths of 0.119–0.128 mm across 2.5W, 5.5W, and 20W power settings. Higher power only narrowed the kerf by ~1.6%.
Khalaf et al., Materials, 2023
Carbonisation vs. Power
Carbonisation (edge charring) was inversely related to power: 2.5W produced 72–82% carbonisation, while 20W reduced it to 52–60%. Counter-intuitively, higher power with faster feed rates produces cleaner cuts because the material is removed before heat can spread laterally.
Khalaf et al., Materials, 2023
Optimal Process Parameters
The same study identified optimal cutting conditions at 18 mm standoff distance, 200 mm/min feed rate, and 70% duty cycle. Material removal rate at 20W was 0.008–0.009 mg/s, only marginally better than lower powers.
Khalaf et al., Materials, 2023
Laser vs. Ultrasonic Cutting
A 2025 comparative study on 1.4 mm buffalo leather found that CO2 laser cutting produces smoother edges than ultrasonic methods, though ultrasonic cutting avoids all thermal effects. For hobbyists, laser remains the practical choice when paired with proper ventilation.
Scientific Reports, 2025
Frequently Asked Questions
Can you laser engrave leather?
Yes. Both diode and CO2 lasers can engrave vegetable-tanned leather with excellent results. The laser burns away the top surface layer, creating a darker, permanent mark. Most diode lasers in the 10-40 W range handle leather engraving in a single pass at moderate power.
What type of leather is safe to laser?
Only vegetable-tanned (plant-tanned) leather is safe to laser. Chrome-tanned leather releases hexavalent chromium when heated, which is carcinogenic. Always confirm with your supplier that the leather is vegetable-tanned before putting it under a laser. If unsure, check the back of the leather — chrome-tanned is often blue or gray.
What settings for laser engraving leather?
For a 20 W diode laser on 2 mm vegetable-tanned leather, start around 500-600 mm/s at 40-50 % power in a single pass. Lower power gives a lighter mark; higher power burns deeper. CO2 lasers engrave leather at 300-350 mm/s and 12-15 % power. Always test on a scrap piece first because every leather batch behaves differently.
Can a diode laser cut leather?
Diode lasers can cut thin leather (1-2 mm) but the edges tend to darken and may not be as clean as CO2 cuts. For cutting leather thicker than 2 mm, a CO2 laser is recommended. If using a diode, try multiple light passes rather than one heavy pass to get cleaner edges.
Is it safe to laser cut leather?
It is safe to laser vegetable-tanned leather with proper ventilation. Leather produces strong-smelling fumes even when the material itself is safe, so always use an enclosure with exhaust or work in a well-ventilated area. Never laser chrome-tanned leather — it releases toxic hexavalent chromium.
How to tell if leather is chrome-tanned?
Check the back (flesh side) of the leather. Chrome-tanned leather often has a blue or gray tint on the back, while vegetable-tanned leather is typically a natural tan or brown color throughout. The most reliable method is to ask your supplier directly. If there is no label and you cannot confirm the tanning method, do not laser it.
Need settings for a different machine or material?
Get instant, personalized laser parameters for any machine + material combo with the LaserParams AI assistant.
Get Instant SettingsAlso check out our other material guides: Wood · Acrylic · GRBL Alarm Codes