All Laser Cutters require two additional devices which move air: blower which removes air flow / extracts smoke from machine and atmosphere compressor as a source for compressed air flow for so called air flow assist.
Laser cuts by heat, very high heat focused in tight beam. Side items of high temperature are smoke and fire, both aren’t welcomed addition, smoke disperses laser beam reducint it’s efficienty and fire causes charring of materials / edges and may even escape control causing serious emergency.
Fire needs atmosphere to burn but it will also die if you blow too hard, think of a candle in the wind. This is essentialy what surroundings assist is definitely for: compressed atmosphere is extruded straight at the laser mind in a very tight stream and is directed at the place where laser touches material.
Pressure of surroundings is key adjustable for air support efficienty, in our shop we found out that optimal worth is between 2 and 3.5 bar (31-50psi).
To attain required pressure compressor must push certain level of air through air assist opening, exact volume depends 
