All Laser Cutters need two additional gadgets which move air flow: blower which removes surroundings / extracts smoke from machine and atmosphere compressor as a source for compressed atmosphere for so called air assist.
Why and How
Laser cuts by temperature, very high heat focused in tight beam. Side products of high heat are smoke and fire, both aren’t welcomed addition, smoke Air Compressor For Tire Production Equipment disperses laser reducint it’s efficienty and fire causes charring of materials / edges and will even get out of control causing serious emergency.
Fire needs air flow to burn but it can also die if you blow too hard, think of a candle in the wind. This is essentialy what air flow assist is definitely for: compressed surroundings is extruded directly at the laser mind in a very restricted stream and is directed at the place where laser touches material.
Pressure and level of air
Pressure of air is essential variable for air assist efficienty, in our shop we found out that optimal value is between 2 and 3.5 bar (31-50psi).
To achieve required pressure compressor needs to push certain level of air through air flow assist opening, exact volume depends on size of the opening and desired pressure. Top quality laser cutter heads have little and finely tuned openings while cheaper chinese cutters just blow in general direction via huge holes.
Proper compressor
When choosing compressor you need to consider if it 
can constantly provide desired pressure and level of air. Little airbrush compressors small compressors boast impressive pressure figures but actually poor flow rates enough limited to airbrush pistols. Actually if small compressor would be able to push enough air it will likely overheat in short while.