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Hi, I have decided finally to get an airbrush. For the brush I want to get a dual action gravity feed one. But for the compressor I have seen piston ones and diaphragm ones. My question is what do people recomend?
A gravity feed is great for very small detail work. I actually find more use out of my larger brush to spray the primer/base-coats.
As far as the compressor, you will definitely get longer life from a piston. A diaphram eventually wears out - it is just a pieces of rubber. However, it will work fine for years and years - especially if you are only using it for light 15-25 psi airbrush work and not trying to get to 90 psi for a nail gun. There are lots on the market and there are a number of past posts that talk about the virtues of different compressor features - among them is what else will you use the compressor for, etc.
My personal favorite? I have three compressors and my easiest (and cheapest) was a 1 1/2 gallon Husky that I got for some air tools and only cost about $60. I can dial it down to airbrush psi or up to run other pnuematics. If you get a model with a tank just remember to ALWAYS open the valve to purge the tank and get the moisture out when you are done - then leave it open and just get in the habit of closing the valve when you turn it on. This way, you keep your tank from rusting out.
I think that I have the exact same compressor that MDSW has, but I only use it when my CO2 tank runs out of gas. I really prefer the silence of the gas cylinder.
I've got this little 1 gallon pancake air compressor from Walmart, similar to MDSW. But, normal compressors aren't as quiet as airbrush compressors (or CO2 tanks).