This page describes a laser engraving setting published for PET-G at 0.5 mm, tested on a StyleCNC STJ1325 fitted with a CO2 150W source (10,600 nm CO2, 150 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 PET-G at 0.5 mm does not transfer to another thickness, nor to another source. A 10,600 nm CO2 rated 150 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 PET-G, then adjust the speed rather than the power. Work with fume extraction and air assist, wear glasses rated for 10,600 nm CO2, and never leave the machine unattended.
StyleCNC supplies industrial-format CO2, fibre and mixed machines, often configured to order. As with any configurable hardware, the useful setting is the one that comes with the source's real power and the installed lens focal length.
PET-G is the transparent plastic of guards, covers and displays. It cuts cleanly with a CO2 but not with a diode, and unlike acrylic it does not shatter: it bends. Its edge stays slightly milky, never polished like PMMA.
CO2 only: a blue diode passes through clear PET-G without touching it. With a 40 W CO2, expect around 60% at 400 mm/min on 3 mm, in one pass.
PET-G melts rather than vaporises: too low a speed creates a bead along the line. Prefer a higher speed with slightly more power, and strong air assist.
For engraving, stay light (20% at 3,000 mm/min): PET-G whitens at the surface, giving a very clean frosted look, but too strong an engraving distorts it.
Common thicknesses: 0.5, 1, 2 and 3 mm. Beyond that, the melt bead becomes hard to control on a workshop CO2.
Pitfall: confusion with PVC. An unidentified clear sheet may be PET-G, acrylic or PVC — and PVC is strictly forbidden on a laser. When in doubt, cut nothing: a flame test on an offcut, outdoors, settles it (PVC gives off a sharp acid smell).
Keep the protective film on during cutting: it prevents smoke marks on the surface.