Ortur Laser Master 3 Settings & Speeds

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Cardboard on Ortur LM3.

Cardstock on Ortur LM3.

Paper on Ortur LM3 20W.

Higher DPI tumbler pass for fine detail or photo on powder-coated stainless. Rotary required. Keep power moderate.

Powder-coated tumbler engraving — use rotary attachment. Low power to ablate coating without gouging metal. Test on a scrap tumbler first.

Plywood engrave pass for surface marking and score lines. Adjust DPI to 300+ for photo engraving.

Generic plywood cut — 2 passes for cleaner edge. Pin material flat to avoid shift between passes. Actual passes depend on plywood thickness and glue density.

Higher DPI for fine text and logos on anodized aluminum. Slower speed with lower power gives crisper edges.

Diode lasers mark anodized aluminum directly by ablating the dye layer. No coating needed. Keep power moderate to avoid overburning.

Slower pass for deeper Cermark bond on stainless. Multiple thin coats of spray gives better adhesion.

Apply Cermark or black Molybdenum spray before engraving. Wash residue with water after. Without coating, diode lasers cannot mark bare stainless steel.

Slower pass for finer detail on glass. Mask surface with wet tissue to improve result.

Glass engraving on diode — use masking tape or wet newspaper on surface to reduce micro-fracturing.

Higher speed with full power for faster throughput on marble tile engravings.

Marble ablates cleanly. Lower power than slate — start here and increase if mark is faint.

Higher DPI for fine detail and photo work on slate coasters.

Lower speed for denser ablation on dark slate. Wipe surface clean after engraving.

Very low power to avoid burning through — washi tape is thin. No air assist. Pin sheet flat.

EVA/craft foam cuts cleanly at low power — high power causes melting and edge fusing. No air assist. Ensure good ventilation.

Heavy cardstock — go fast and light to avoid charring. No air assist to prevent sheet lifting.

Go fast to avoid charring the flutes. No air assist — prevents material movement. Pin corners down.

2mm basswood cuts in a single pass on most diode lasers. Air assist keeps the cut clean and reduces char.

Ablates spray paint to reveal bare metal. Thinner than powder coat so needs less power. Reduce power if paint splatters. Clean with IPA first.

Ablates powder coat to expose bare metal. Clean with IPA first. Black powder coat gives highest contrast. No Cermark needed.

Ablates powder coat to reveal bare metal beneath. Works on powder coated panels, signs, and flat stock. Clean with IPA first. Black powder coat gives highest contrast. No Cermark needed — laser burns off the coating directly.

Engrave from the BACK side for a clean mirrored result.

Cast acrylic cuts cleaner than extruded at 10W.

2 passes for clean cut through maple at 10W.

Works on black anodized. 10W gives lighter mark than 20W+ machines.

Warm dark engrave on veg-tan. 45% power good starting point.

Good detail at 254 DPI. Increase to 300 DPI for photo work.

10W unit needs 3 passes. Consistent result when material is flat.

10W diode needs 3 passes; keep air on to prevent flareup.

3mm plywood in 3 passes at full power for 10W diode.

Clear acrylic very difficult for 10W diode — 5+ passes, inconsistent results.

10W diode needs 3 passes for 3mm MDF. Air assist essential to clear debris.

Tape or wet paper towel over glass surface to reduce micro-fractures

Hardwood needs many passes; air assist essential

Hardwood needs many passes; air assist essential

Stainless steel at 10W. Marking spray required. Max power.

Cork sheet 3mm at 10W. 2 passes for clean cut.

Marble tile at 10W. Subtle frosted mark. Test first.

Cotton fabric at 10W. Light scorch effect.

Foam board 5mm at 10W. 2 passes. No air assist.

Bamboo 3mm at 10W. 4 passes. Air assist essential.

Chipboard 2mm at 10W. 2 passes needed.

Corrugated cardboard at 10W. 2 passes for clean cut.

Rubber stamp at 10W. Deep engrave. Invert design.

Denim engrave at 10W. Bleach-look effect.

HTV vinyl score-cut at 10W. Light touch only.

Faux leather at 10W. Single pass. Air assist on.

Mylar 7.5mil at 10W. Single pass clean cut.

EVA foam 6mm at 10W. No air assist to avoid melting.

Acrylic felt at 10W. Medium power, air assist on.

Copy paper 80gsm at 10W. Fast pass, always test first.

Cardstock 300gsm at 10W. Fast single pass.

EVA foam cuts on the LM3 in one pass. Power adjusted down from full to avoid excess melting on cut edges. No air assist. Heavy fumes — use maximum ventilation. Good for stamps and craft projects.

Felt cuts in one pass at 80% on the LM3. No air assist. Wool felt gives cleaner edges. Good for ornaments and festive laser-cut projects.

Chipboard cuts easily on the LM3 in one pass. Good for packaging prototypes and quick stencils. Clean edges at 85% power.

Cotton fabric can be cut on the LM3 at high power. Results are usable but edges are more singed than CO2. Keep air assist off. Pin fabric flat. Natural cotton cuts better than synthetic blends. Consider this a starting point — test on your specific material.

Bamboo takes more power than wood at 20W due to silica content. 68% at 2800mm/min gives solid contrast. Line interval 0.1mm. Popular for cutting boards and coasters on the LM3 community.

Cedar is an ideal material for 20W diode — soft enough to engrave at lower power with great contrast. 48% at 3500mm/min. Aromatic smoke means good ventilation is a must. Beautiful rich color on the engrave marks.

Alder is well-suited to the LM3 — fine grain produces clean detail even at 20W. 65% at 2800mm/min. Great for signage and award plaques where fine text matters.

Pine can be cut at 20W with 3 passes at full power. Soft grain helps. Air assist critical for managing pine resin smoke and preventing flare-ups. Results are usable but expect charring — a higher-wattage machine is better for pine cutting.

Pine engraves well on the LM3 — soft grain absorbs the 20W diode efficiently. 55% at 3500mm/min gives a warm caramel mark. Resin-rich pine produces bold contrast. Ventilate well. Bump to 65% for darker marks on lighter pine.

Cherry engraves cleanly on the LM3 — fine grain, consistent density, rich brown mark at 62%. One of the better hardwoods for 20W diode engraving. Slightly lower power than oak needed.

Oak engraves on the Ortur LM3 at higher power to compensate for hardwood density. 70% at 2500mm/min gives a medium-dark mark. Slower than softwoods. Fine detail is preserved well. Good for personalized oak gifts — keyrings, tags, signs.

Ortur's own capacity test and community data: anodized/painted aluminum at 5000 mm/min, 100% power gives good contrast with shiny finish after wiping. Machine max is 20,000 mm/min. For finer detail reduce speed to 3000–4000 mm/min. Source: ortur.net/blogs/ortur-blog-center/ortur-laser-master-3-20w-engraving-and-cutting-capacity-test + forum.lightburnsoftware.com/t/material-test-generator-setting-for-ortur-lm3-20w/106304

Two passes for 2mm MDF. MDF fumes are toxic — open-frame machines like the LM3 require excellent room ventilation when cutting MDF. Air assist reduces char significantly. The LM3's flame sensor provides an extra safety layer when cutting flammable materials like MDF.

Kraft paper cuts crisply at high speed. Very low power prevents edge discolouration. Good for gift tags, stickers, and paper decorations. The LM3's gyroscope safety is not triggered by paper vibration at these speeds. Use a pin bed to support large paper sheets.

Cork engraves with a clean warm mark at low power. The LM3 produces great results on cork coasters and trivets. Keep power low — 28% at 20W is equivalent to 100% on a 5W machine. Higher power burns through the cork surface and creates an uneven rough texture.

Two passes through 3mm Baltic birch. The void-free core means more consistent cuts than standard plywood at the same settings. Baltic birch holds fine detail better than basswood on intricate cuts. Add a third pass if your particular sheet feels dense.

Removes powder coat to reveal bare metal underneath. Use a rotary attachment and set the correct rotary steps in LightBurn (Device Settings > Rotary). The LM3's gyroscope safety system may trigger if the rotary wobbles — ensure your rotary is stable and the tumbler is balanced.

Bright white engrave on slate. Invert your image before sending. The LM3 handles slate as well as any diode laser — 20W is more than sufficient for stone marking. Wipe clean with a damp cloth immediately after engraving for best contrast.

3 passes for 2mm veg-tan leather. The LM3's safety sensor turns off if it detects flame — ensure your air assist is keeping the cut clear to prevent triggering the safety shutoff mid-job. Leather fumes require good ventilation even with an open-frame machine.

Rich dark mark on vegetable-tanned leather. The LM3's 20W module handles leather engraving excellently. 40% at 4000mm/min gives deep contrast without cutting through. For lighter, more decorative marks (hot stamp look) drop to 28%. Test on each leather batch.

3 passes needed for 6mm basswood at 20W — this is pushing the LM3's limits. Results are usable but edges have significant char. If you regularly cut 6mm wood, a CO2 laser or higher-wattage diode is a better choice. Air assist is essential to prevent fire between passes.

Fast engrave at 6000mm/min. The LM3's 20W module gives a warm brown mark at 40%. For photo engraving use Stucki dithering and drop to 35% power. The 400×400mm bed is well-suited to standard coaster and plaque sizes.

Two passes at 90% cuts through 3mm basswood cleanly. The LM3's flame sensor and gyroscope make it safer than most open-frame diodes for unattended cuts — but still check frequently. Air assist is an add-on module; without it add a third pass and expect heavier char.

Cork cuts easily with 10W. Clean edge, slight char.

Similar settings to xTool. Ortur can run slightly hotter so start 5% lower than you would on xTool.

Cuts clean in 2 passes with air assist. Clean up edges with a soft brush — Ortur tends to char slightly more than xTool.

Ortur runs slightly hotter than equivalent xTool wattage. Start 5% lower than you'd use on xTool. Dynamic power essential.

What materials can the Ortur Laser Master 3 engrave or cut?

The Ortur Laser Master 3 has community-tested settings for Cardboard, Cardstock, Paper, Coated Stainless Steel Tumbler, Plywood, Anodized Aluminum, Stainless Steel, Glass, and 54 more. Results vary by material batch, focus, and ambient conditions — always test on scrap first.

Is the Ortur Laser Master 3 compatible with LightBurn?

Yes, the Ortur Laser Master 3 works natively with LightBurn.

What is the work area of the Ortur Laser Master 3?

The Ortur Laser Master 3 has a work area of 400×400 mm (approximately 16×16 inches).

What settings should I use to cut Cardboard on the Ortur Laser Master 3?

A community-tested starting point is speed 1000 mm/min, power 50% in a single pass. Always run a test cut on scrap to confirm before committing to your project.

Can the Ortur Laser Master 3 engrave metal?

Diode lasers can mark anodized aluminium, coated metals, and powder-coated surfaces without any spray. For bare steel, brass, or copper you need a marking compound like Cermark or Dry Moly. Fiber lasers mark bare metal directly without any coating.