When choosing compressor you need to consider if it will be able to constantly provide Air Compressor For Laser Cutting desired pressure and level of air. Small airbrush compressors small compressors boast impressive pressure figures but really poor flow rates enough limited to airbrush pistols. Even if small compressor would be able to push enough air it’ll likely overheat in couple of minutes.
Our laser cutter came with little membrane pump (Smallest on the picture), I do not know what specifications it has but stream of air was very weak. It is sufficient if all you have to to accomplish is engrave, although also then we got considerable smoke traces around engraved picture.
it had been rated for level of ~2.4cfm and had a 1 gallon tank which can be filled to 58 PSI. It managed to give us constant 1 bar (14 PSI) of pressure, nonetheless it had to operate constantly and overheat badly within 5 minutes.
Third and current compressor we got was 6cfm rated belt driven unit with 13 gallon tank which is filled to ~100psi. With this unit we are able to run at constant ~2bar (31psi) without fear of overheating since compressor engine is not on at all times. Using reserve air in tank we can also force up to 3.5bar (50psi) for brief jobs.
The best setup in my opinion would be compressor rated to >6cfm, huge 70+ gallons tank rated to 10bar (140psi) and software air control via solenoid valve.