This page describes a laser engraving setting published for Papier cartonné 300g at 1 mm, tested on a Ortur Laser Master 3 fitted with a Diode 20W source (445 nm blue diode, 20 W). It states the exact machine, source, material, thickness and operation of the test; power, speed and number of passes are shown with a Premium pass.
Why those four facts matter: a engraving setting that works on Papier cartonné 300g at 1 mm does not transfer to another thickness, nor to another source. A 445 nm blue diode rated 20 W does not deposit the same energy as a stronger module, and the speed has to be adjusted accordingly. Copying a number without checking those four points is the first cause of a ruined part.
Published by LaserSettings (estimation). No other workshop has confirmed it yet: treat it as a starting point, and confirm it from your account if you reproduce it.
No photo comes with this setting yet. If you reproduce it, publish yours from your account: a picture of the result is worth more than a line of numbers.
Recommended routine before running the part: clean the lens, redo the focus, engrave a small test grid on an offcut of the same Papier cartonné 300g, then adjust the speed rather than the power. Work with fume extraction and air assist, wear glasses rated for 445 nm blue diode, and never leave the machine unattended.
Ortur popularised the light, quick-to-set-up open-frame diode engraver, with safety features (impact stop, flame detection) rare at that price. Models differ mainly in module power and gantry rigidity, which caps the usable speed before vibration.
Cardstock is the material for fine cutting: invitations, templates, models, fretwork impossible by hand. It needs almost no power, but forgives very little.
Work at minimum power and maximum speed. The right setting is the one that barely cuts: as soon as you leave margin, the line yellows half a millimetre either side, and that shows on an invitation.
For a clean fold (scoring), a single very low-power pass marks the fibre without going through: folding becomes straight and consistent.
Paper moves at the slightest draught. A honeycomb bed and, if needed, a few magnets on the edges stop a sheet lifting mid-cut — the number one cause of failed cuts and fires.
Paper ignites instantly and fire spreads across the whole sheet in seconds. This is the material where "never unattended" is most literal.
Avoid metallic, plasticised or laminated papers: the film is often an unknown plastic, sometimes chlorinated.
Smoke marks come off with a kneaded eraser. On light paper, masking tape on the visible face during cutting remains the best prevention.