All laser cutting machine must to use the protection gas. compare with oxygen and nitrogen, High pressure compressed air is the best solution.
A high quality air compressor and the compressed air treatment system are very important to a laser cutting machine. Without purified air, it will pollute and damage laser head lens, reduced the producibility and faulty productions.
The laser cutting machines must content the following: 16 bars pressure air compressor with a tank, Refrigerated air dryer and 3 stages air filters.