All Laser Cutters need two additional gadgets which move air flow: blower which removes air / extracts smoke from machine and atmosphere compressor as a source for compressed atmosphere for so called atmosphere assist.
Laser cuts by warmth, very high high temperature Laser Cutting Air Compressor focused in tight beam. Side items 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 escape control leading to serious emergency.
Fire needs surroundings to burn but it can also die in the event that you blow too hard, think of a candle in the wind. This is essentialy what atmosphere assist is for: compressed air flow is extruded straight at the laser head in a very limited stream and is directed at the place where laser touches material.
Pressure of surroundings is key adjustable for air help efficienty, inside our shop we discovered that optimal worth is between 2 and 3.5 bar (31-50psi).
To achieve required pressure compressor must push certain volume of air through air flow assist opening, exact volume depends on size of the opening and desired pressure. Top quality laser cutter heads have small and finely tuned openings while cheaper chinese cutters just blow generally direction via large holes.