This page describes a laser engraving setting published for Métal + spray de marquage at 2 mm, tested on a Cloudray LiteMarker UV 3W fitted with a UV 3W (355nm) source (UV, 3 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 Métal + spray de marquage at 2 mm does not transfer to another thickness, nor to another source. A UV rated 3 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 Métal + spray de marquage, then adjust the speed rather than the power. Work with fume extraction and air assist, wear glasses rated for UV, and never leave the machine unattended.
Cloudray is primarily a component supplier (fibre sources, galvos, tubes, optics) and sells markers built around those parts. Two machines with the same name can carry different sources, so the useful setting always belongs to the source, not the cabinet.
Marking spray is the way to mark bare metal without a fibre source: a thin coating on the part vitrifies under the beam and bonds permanently to the metal. A CO2 or a diode is then enough.
The coating must be thin and even: two crossed spray passes, fully dried, no runs. Too thick and it flakes instead of bonding; too thin and the mark has gaps.
The classic setting is high power at moderate speed, single pass. Adhesion comes from contact between the product and the heated metal: too fast and nothing takes.
The result is matt black. It lacks the fineness of true fibre marking, but it is perfectly legible and permanent.
The product comes as an aerosol: follow the maker's instructions, ventilate the room and wear a mask while spraying, outside the machine.
Metal still reflects the beam even when coated: lid closed and goggles matched to your source.
After marking, rinse the part with water: unfixed product washes off and only the bonded mark remains. That is also how you confirm the setting worked.