All Laser Cutters need two additional gadgets which move air flow: blower which removes air / extracts smoke from https://www.ever-power.net/?s=laser+cutting+air+compressor&post_type=product machine and surroundings compressor as a source for compressed atmosphere for so called air flow assist.
Why and How
Laser cuts by high temperature, very high high temperature 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 materials / edges and will even get out of control causing serious emergency.
Fire needs atmosphere to burn nonetheless it will also die in the event that you blow too hard, think of a candle in the wind. That is essentialy what air flow assist is certainly for: compressed air flow 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 essential variable for air assist efficienty, inside our shop we discovered that optimal value is between 2 and 3.5 bar (31-50psi).
To attain required pressure compressor needs to push certain level of air through air assist opening, exact volume depends upon size of the starting and desired pressure. High quality laser beam cutter heads have little and finely tuned openings while cheaper chinese cutters simply blow generally direction via large holes.
When choosing compressor you need to consider if it can constantly provide desired pressure and volume of air. Little airbrush compressors little compressors boast impressive pressure figures but actually poor flow rates sufficient only for airbrush pistols. Actually if small compressor would be able to push enough air it’ll likely overheat in couple of minutes.