settings · leather · engraving
Leather Engraving Settings (5W–40W Diode Lasers)
On a 20W diode laser, engrave vegetable-tanned leather at 22% power, 4,000 mm/min, 1 pass for a clean, permanent mark. Chrome-tanned leather and faux leather are banned — they release HCl gas when lasered (see below). Settings here are for natural vegetable-tanned leather only. Anchor row from xTool D1 Pro 20W official settings; other wattages normalized via the Laser Tinkerer Energy Index (EI target ≈ 0.020 J/mm).
- Very low EI needed: 0.018–0.022 J/mm — leather chars much more easily than wood
- Chrome-tanned and faux leather are BANNED — burning releases HCl gas (see safety section)
- Multiple light passes produce better depth than one heavy pass — reduces the risk of burning through
- A slight defocus (+2 to +3mm) widens the mark and suits artistic work; use nominal focus for sharp text
Engraving settings — vegetable-tanned leather
| machine class | speed (mm/min · mm/s) | power | passes | EI (J/mm) | source |
|---|---|---|---|---|---|
| 5W | 1,000 · 16.7 | 22% | 1 | 0.020 | |
| 10W | 2,000 · 33.3 | 22% | 1 | 0.020 | |
| 20W ★ | 4,000 · 66.7 | 22% | 1 | 0.020 | xTool D1 Pro 20W guide |
| 33W | 4,000 · 66.7 | 14% | 1 | 0.019 | |
| 40W | 4,000 · 66.7 | 11% | 1 | 0.020 |
Technique and tips
Identify your leather before anything else. Ask the supplier specifically: "vegetable-tanned or chrome-tanned?" Full-grain, top-grain, and genuine leather are hide-cut designations, not tanning-type designations. Stiff, natural-colored leather is often veg-tan; soft, flexible, brightly-colored leather is usually chrome-tanned.
Start cool and add energy gradually. Run a single pass at the table values first. The mark on veg-tan leather from one light pass is usually sufficient. If you want deeper embossing, run 2–3 passes instead of increasing power.
Air assist at low pressure. 2–4 PSI of air assist clears smoke from the surface and reduces surrounding scorch marks. High pressure distorts the leather surface near the beam path.
Clean after engraving. Leather smoke residue stains the unengraved surface. Wipe with a barely-damp cotton cloth after the job, then apply a light leather conditioner to restore moisture.
FAQ
How do I identify vegetable-tanned leather? Veg-tan is typically stiff and firm when new, with a natural tan to pale golden color that darkens with use. Chrome-tanned leather tends to be softer, more pliable, often brightly colored, and is the majority of garment, accessory, and hardware-store craft leather sold today.
Can I engrave synthetic suede or microsuede? Not without knowing the exact fiber composition. Most synthetic suedes are polyester or polyurethane — both produce hazardous fumes when burned. Some also have a PVC backing. Confirm the full material composition before lasering.
Should I defocus for leather? A slight defocus (+2 to +3mm) produces a wider, softer mark and is often preferred for ornamental and artistic work. For sharp text, logos, or fine lines, use nominal focus.
- Vegetable-tanned leather sheets — the only safe type for laser work; look for 2–3 mm thickness for coasters, bookmarks, and small panels
- Air assist pump — blows smoke away from the beam, reduces scorch on surrounding leather surface
- OD7+ laser safety glasses (450 nm) — essential for all diode laser sessions
As an Amazon Associate I earn from qualifying purchases. Links are to search results — no specific product is tested or endorsed.