1000W IPG Fiber Laser Metal Cutter for 3mm Aluminum Sheet
You will see 1000 watts metal laser cutting machine with IPG fiber laser generator cut 3mm aluminum sheet in this video.
There are 3 mirrors and one lens in CO2 laser cutter, and the mirrors & lens need to be clean with alcohol to keep clearly to reflect the laser in daily usage.

There are 3 mirrors and one lens in the CO2 laser cutter, when you use it cut wood, MDF or acrylic, the mirrors and lens offen need to be clean with alcohol to keep clearly to reflect the laser, so when you clean the mirrors and lens, please take care to avoid the broken.
You will see 1000 watts metal laser cutting machine with IPG fiber laser generator cut 3mm aluminum sheet in this video.
12mm wood laser cutter STJ1390 can be equipped with different laser powers for different wood cutting.
Here is a video for fiber laser metal cutter cutting stainless steel as automotive accessories, in addition to more metal fabrication projects and plans.