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