All Laser Cutters want two additional products which move atmosphere: blower which removes air / extracts smoke from machine and surroundings compressor as a source for compressed air flow for so called surroundings assist.
Why and How
Laser cuts by heat, very high high temperature focused in tight beam. Side products of high heat are smoke and fire, both are not welcomed addition, smoke disperses laser beam reducint it’s efficienty and fire causes charring of materials / edges and will even get out of control causing serious emergency.
Fire needs atmosphere to burn but it can also die in the event that you blow too hard, think about a candle in the wind. That is essentialy what air flow assist is definitely for: compressed surroundings is extruded directly at the laser head in a very restricted stream and is directed at where laser touches material.
Pressure and level of air
Pressure of air flow is key variable for air help efficienty, inside our shop we found out that optimal value is between 2 and 3.5 bar (31-50psi).
To accomplish 
required pressure compressor must push certain level of air through surroundings assist opening, specific volume depends upon size of the opening and desired pressure. High quality laser beam cutter heads have little and finely tuned openings while cheaper chinese cutters simply blow in general direction via large holes.
Proper compressor
When choosing compressor you should consider if it can Air Compressor For Tire Production Equipment constantly provide desired pressure and volume 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 can push enough air it’ll likely overheat in short while.