When choosing compressor you need to consider if it will be able to constantly provide desired pressure and volume of air. Small airbrush compressors little compressors boast impressive pressure figures but actually poor flow rates adequate only for airbrush pistols. Also if small compressor would be able to push enough air it will Air Compressor For Laser Cutting china likely overheat in short while.
Our laser cutter was included with little membrane pump (Smallest on the picture), I do not know very well what specifications it has but blast of air was very weak. It is adequate if all you have to to accomplish is engrave, although also then we got substantial smoke traces around engraved picture.
it had been rated for level of ~2.4cfm and had a 1 gallon tank which may be filled to 58 PSI. It managed to give us constant 1 bar (14 PSI) of pressure, but it had to operate all the time 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 concern with overheating since compressor engine is not on all the time. Using reserve atmosphere in tank we can also drive 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.