WOOD (Walnut) - CO2 Engrave Laser Settings - CO2 40W

Specifications and context

Evidence status

Bundled baseline — no community vouch or proof-burn photo attached

Source data reviewed

2026-08-09

Laser source

CO2

Model

CO2 40W

Power

20%

Speed

300 mm/s

Frequency

20 kHz

Passes

1

Hatch interval

0.08 mm

Pulse width

Not specified

Production guidance

This WOOD (Walnut) - CO2 Engrave wood record pairs 20% power with 300 mm/s on CO2 40W, using 1 pass, 20 kHz, 0.08 mm hatch spacing, and no recorded pulse-width override. Compare every listed field with the source, lens, focus method, and material finish on your machine before transferring the recipe.

1. 1. Engrave on walnut. Rich dark contrast.
2. 2. Treat this as an unverified baseline, not a production preset. A VERIFIED Parameters Library record requires three independent community vouches; an attached proof-burn image provides additional evidence.
3. 3. Grain direction, resin pockets and moisture content move the result more than the numbers do — run the test square on the same board you plan to cut, not a different piece of the same species.
4. 4. CO2 results move with lens focal length and air assist pressure. Note both alongside these numbers or the recipe will not reproduce on another machine.
5. 5. Change one variable at a time — power, then speed, then frequency — so you can attribute the improvement when you find it.
6. 6. Record the successful result in the Parameters Library so the next production run is repeatable.

The bundled note for this WOOD (Walnut) - CO2 Engrave recipe is: “Engrave on walnut. Rich dark contrast.” The source data was reviewed 2026-08-09; no independent vouch or proof-burn image is attached. Label the scrap test with the adjusted values and keep the accepted result with the production job.