This page describes a laser engraving setting published for Feutrine / laine at 2 mm, tested on a OMTech Polar 35W Desktop CO2 Laser Engraver fitted with a CO2 35W source (10,600 nm CO2, 35 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 Feutrine / laine at 2 mm does not transfer to another thickness, nor to another source. A 10,600 nm CO2 rated 35 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 Feutrine / laine, 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.
OMTech offers a broad range of enclosed CO2 machines, fibre markers and galvo models, with many options (honeycomb bed, rotary, chiller). On CO2 units, mirror alignment quality on delivery varies: a setting that gives nothing often starts as an alignment problem, not a power one.
Felt cuts with a sharpness scissors cannot match, and the edge is heat-sealed so it does not fray. Provided you can tell real wool from synthetic felt.
Wool felt cuts cleanly, with a burnt-hair smell and a slightly browned edge. Synthetic felt (polyester, acrylic) melts: the edge turns hard, sometimes glassy, and yellows.
Neither contains chlorine, so both are laser-safe — but avoid unlabelled blends, and above all anything with a plasticised backing.
Very little energy and high speed: felt cuts almost instantly. The right setting is the one that goes through without browning more than a tenth of a millimetre either side of the line.
Felt lifts in the air-assist draught. A honeycomb bed, magnets or a cardboard frame stop an already-cut piece shifting and being cut twice.
Engraving felt is rarely worthwhile: the laser crushes the fibres rather than creating contrast. Keep it for cuts and fretwork.