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Laser cutting Leather 3mm: speed, time and cost
Leather 3mm cuts at about 12 mm/s on a 100 W CO2 laser in one pass. Below: what that means in time and money on common machines, plus settings tips. Price your own file in the calculator — it runs in your browser, nothing is uploaded.
Open the calculator preset for Leather 3mm →Leather 3mm at a glance
| Material group | Leather |
|---|---|
| Thickness | 3 mm |
| Reference cut speed (100 W CO2) | 12 mm/s × 1 pass |
| Air assist | medium air assist |
| Diode lasers | yes, slower (5–10×), more passes as thickness grows |
Time and cost by machine (100 × 60 mm part, €60/h)
| Machine | Speed | Time | Machine cost |
|---|---|---|---|
| xTool D1 Pro 10W | 2.4 mm/s | 2 m 13 s | €2.22 |
| xTool D1 Pro 20W / S1 20W | 3.6 mm/s | 1 m 29 s | €1.48 |
| OMTech K40 (40W CO2) | 6 mm/s | 53 s | €0.89 |
| OMTech / Gweike 60W | 9 mm/s | 36 s | €0.59 |
| OMTech / Thunder / Gweike 80W | 10.8 mm/s | 30 s | €0.49 |
| 100 W CO2 (workshop reference) | 12 mm/s | 27 s | €0.44 |
Speeds scale from the workshop reference by machine class. Material, setup and margin come on top — open the calculator to add them and nest parts on your sheet.
Settings tips for Leather 3mm
vegetable-tanned leather only — chrome-tanned releases toxic fumes. Expect a burnt-edge smell; mask the surface. Test-cut a small square first: dial speed, not power, until it just cuts through — cleaner edge, less char.
Can your machine actually cut this?
Both diode and CO2 machines cut and engrave leather well — it is one of the few materials where a modest diode produces genuinely professional results, because leather engraves by darkening rather than by depth.
3 mm is the sweet spot for most machines here. A CO2 machine will do it in one pass; a diode usually wants two at a moderate speed rather than one slow crawl, because a slow single pass dumps heat into the surrounding material and chars the face. If a cut fails at this thickness the cause is almost always focus, not power — check that the focus is set to the surface before you turn anything up.
Buying the right sheet
Use vegetable-tanned leather. Beyond safety, veg-tan is the leather that engraves to a rich dark brown; it takes the mark the way people expect from the photos they have seen online.
Safety — read this before the first cut
Never laser chrome-tanned leather. Most cheap upholstery and garment leather is chrome-tanned, and heating it releases hexavalent chromium — a confirmed carcinogen. This is the most serious hazard on this site and it is invisible: chrome-tanned and veg-tanned leather look the same. If the supplier will not tell you the tanning method, do not put it in the machine. The same applies to anything labelled "faux", "PU" or "bonded" leather, which is usually PVC-backed and releases chlorine gas.
Getting a clean edge
Real leather smells strong when cut — that part is normal. The edge seals slightly as it cuts, which is useful. Run extraction throughout; the smell settles into a workshop and stays for days.
Leather 3mm FAQ
How fast can you laser cut Leather 3mm?
On a 100 W CO2 laser about 12 mm/s in a single pass. Diode lasers are roughly 5× slower (and need more passes above 3 mm). A 100 × 60 mm part (320 mm of cutting) takes about 27 s at 12 mm/s.
How much does laser cutting Leather 3mm cost?
Laser cutting is priced by machine time: cut length ÷ speed = time, × hourly rate (€60/h typical for a small shop) + setup + material. At 12 mm/s a 100 × 60 mm part is about €0.44 of machine time before material and setup.
What settings do I use for Leather 3mm?
Start from your machine's leather preset, use medium air assist, and do a test cut: if it doesn't cut through, slow down 10–15% before adding power. vegetable-tanned leather only — chrome-tanned releases toxic fumes. Expect a burnt-edge smell; mask the surface.
Where to buy Leather 3mm
Veg-tan marks cleanly. Chrome-tanned leather contains chromium salts and should not be lasered — check which one you are buying.
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Other Leather: Leather 1mm · Leather 2mm