When choosing compressor you should consider if it can constantly provide desired pressure and level of air. Little airbrush compressors little compressors boast amazing pressure figures but really poor flow rates sufficient limited to airbrush pistols. Also if small compressor would be able to push enough air it will likely overheat in short while.

Our laser cutter was included with small membrane pump (Smallest upon the picture), I really 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 significant smoke traces around engraved picture.

it was rated for level of ~2.4cfm and had a 1 gallon tank which can be filled to 58 PSI. It were able to give us continuous 1 bar (14 PSI) of pressure, but it had to run 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 can run at continuous ~2bar (31psi) without fear of overheating since compressor engine isn’t on continuously. Using reserve Air Compressor For Laser Cutting china surroundings in tank we can also push up to 3.5bar (50psi) for short jobs.

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