I guess 40w was just not enough to make a mark on metal.
Can a 40 watt laser cut metal.
There is no single manufacturer or official design spec for these and they are all slightly different but work on the same or at least very similar principles a blue sheet metal box containing an allegedly 40 watt laser but usually closer to 30 watts using roughly similar controls some are analogue some are digital and with roughly similar connections.
Engraving onto metal was tough.
When i switched to full power cutting setting i finally managed to produce some results.
Instead the 40 watt laser is best used on acrylic or wood projects.
However it is also compatible with other materials.
You can etch metal but only when it is coated with a special paint.
No matter how high i set the laser power on the engraving setting it never put a scratch on the metal.
You are probably looking at a fiber laser which will never cut metal no matter how much wattage you have.
Even though digilab s lc40 is a co2 laser cutting metal is not one of the features of the laser.
Different fiber optics material quality gases optical lenses cutting patterns etc will affect the cutting speed and need to be adjusted according to site conditions.
Metals such as stainless steel and aluminum can be cut with a laser when compressed gas technology is used.