This page describes a laser engraving setting published for Feutrine / laine at 1 mm, tested on a Monport CO2 40W fitted with a CO2 40W source (10,600 nm CO2, 40 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 1 mm does not transfer to another thickness, nor to another source. A 10,600 nm CO2 rated 40 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.
Monport offers enclosed CO2 machines (often 40 to 100 W, water-cooled) and fibre markers, priced below the long-established builders. CO2 tubes age: at the same displayed power, a two-year-old machine cuts slower than on day one, which explains many gaps between published settings.
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.