All Laser Cutters need two additional devices which move surroundings: blower which removes surroundings / extracts smoke from machine and air flow compressor as a source for compressed atmosphere for so called atmosphere assist.
Why and How
Laser cuts by warmth, very high warmth focused in tight beam. Side products of high heat are smoke and fire, both aren’t welcomed addition, smoke disperses laser reducint it’s efficienty and fire causes charring of material / edges and may even escape control leading to serious emergency.
Fire needs air to burn nonetheless it will also die if you blow too hard, think of a candle in the wind. This is essentialy what air flow assist is certainly for: compressed air is extruded straight at the laser head in a very limited stream and is fond of where laser touches material.
Pressure and volume of air
Pressure of surroundings is key variable for air support efficienty, inside our shop we found out that optimal value is between 2 and 3.5 bar (31-50psi).
To attain required pressure compressor must push certain level of air through surroundings assist opening, exact volume depends upon 
size of the starting and https://www.ever-power.net/?s=laser+cutting+air+compressor&post_type=product desired pressure. Top quality laser cutter heads have little and finely tuned openings while cheaper chinese cutters simply blow generally direction via huge holes.
Proper compressor
When choosing compressor you should consider if it will be able to constantly provide desired pressure and volume of air. Small airbrush compressors small compressors boast impressive pressure figures but actually poor flow rates sufficient only for airbrush pistols. Actually if small compressor can push enough air it will likely overheat in couple of minutes.