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