When choosing compressor you need to consider if it will be able to constantly provide desired pressure and level of air. Little Air Compressor For Laser Cutting china airbrush compressors little compressors boast amazing pressure figures but really poor flow rates adequate limited to airbrush pistols. Also if small compressor can push enough air it will likely overheat in couple of minutes.

Our laser cutter was included with little membrane pump (Smallest on the picture), I really do not know very well what specifications it has but stream of air was extremely weak. It is adequate if all you have to to accomplish is engrave, although actually then we got significant 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 managed 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 unit with 13 gallon tank which is filled to ~100psi. With this unit we can run at continuous ~2bar (31psi) without concern with overheating since compressor engine isn’t on continuously. Using reserve atmosphere in tank we are able to also force up to 3.5bar (50psi) for brief jobs.

The best setup in my opinion will be compressor rated to >6cfm, large 70+ gallons tank rated to 10bar (140psi) and software air control via solenoid valve.