big compressor, small airbrush= needs stuff to fix air supply...
Have been using an old 1/4 hp Devibes oil-less compressor for a really long time... it powered a small air gun and paint spray kit. it runs constantly with a 20-30 psi unloader
bypass air pressure regulator...
the thing blows dust off models and 1/2 cup spray gun works ok for shooting base coat paints, However the hot, pulsing air supply is useless for powering any airbrush as the airbrushes spatter and the hot air dries the paint too fast...
So a trip to the local Marine / Industrial parts and supply store...
1= they suggested 2 each 1/2 copper intercoolers hooked in series at the output of the compressor ( about 10 ft of coiled up copper tubing w heat fins, each unit costs under 20 dollars )... now have room temp pulsing air coming out of the second intercooler...
2= they suggested a 4 way copper coupling with in-port, out port, top accumulator port, bottom water drain port w / drain petcock ( under 6 dollars )...
3= gave me a used 6 lb chemical fire extinguisher and some copper tubing fittings and an
epoxy kit to make an air accumulator tank ( under 10 dollars )... the completed tank screws into the top port of the 4 way copper couplings... the volume of air in the accumulator tank smooths out the air pulses to a steady, cool flow at the output port of the 4 way copper coupling...
4= they suggested an inline 0-30 psi pressure air regulator ( under 25 dollars ) at the output port of the 4 way copper coupling...
5= they suggested a copper tee with a small pressure gauge at the output port of the inline regulator... the output of the t is cooled, precisely regulated air suitable for an airbrush...
Hook up a garage air hose long enough to get that noisy compressor out of the hobby room, get a quick disconnect fitting to screw into the airbrush hose adapter and you can run 3 airbrushes at once, quietly...
please note that 500 dollar airbrush units don't have features like this, and it will run pretty much forever= mine is 30 years old...
print this out and take it to the store with your compressor if needed, it is a good cheap fix... if enough folks want pix can do... good luck ! !