The Different Types of Airbrushes
1. The Single Action 
A simple on/off trigger is the only control on a single action airbrush while spraying. The paint to air ratio can be
adjusted on most models, but not while in use.
The mixing of paint and air in these units can be either external or internal. External mixing is the cruder system and should only be used for fairly rough applications. Internal mixing allows for better atomization and produces a better spray quality and finer results.
In situations where big backgrounds or large areas of flat color are required, the single action airbrush does the job just fine. For more control and more detailed work though, the double action airbrush is your best bet.
2. The Double Action
Although a bit more expensive, the double action airbrush is a lot more versatile than the single action. Now you can independently control the airflow and the color flow. It takes a little bit of time to master, but the control soon becomes second nature. Between controlling the air and paint, and the distance from the object being painted, any degree of spray is achievable - from a hair-thin line to a full-volumed spray wash.
Types of Paint Feed Mechanisms
1. Gravity
Gravity feed airbrushes can either have a built-in top-mounted paint reservoir or side-mounted paint cups. More often than not, the side cups are removable which has advantages for cleaning and quick color changes. Having multiple paint cups pre-loaded with the required pigments is a very efficient method for multi colored projects. 
Gravity fed guns are light-weight and perfect for detailed work where color changes are frequent and paint use is minimal.
2. Suction
Suction feed airbrushes have a larger paint jar mounted below the airbrush from which the paint is drawn up by suction. This type has the obvious advantage of holding a larger capacity of paint, but the downside is that the unit is heavier than the gravity feed type, and also can become awkward in close-up detailed work situations.
From my experience, I see that most serious airbrushers end up owning both types; one for detailed work and the other for larger projects.
November 18th, 2009 at 4:57 pm
Nice website. I enjoyed having a look around. I’ve been into airbrushing for 2 years now and really enjoy it. I like Iwata too but lately I’ve been using a Paasche for some large artworks and motorcycle tanks.
Keep on sprayin’
Andre C.
February 25th, 2010 at 6:36 pm
The airbrush is very useful. as a parent of 1 very energetic and artistic child we purchased an airbrush for his hobby a while back. even I have got into using it and really enjoy the variety of designs that you can create with it.
.-= Anne @ Art Drying Rack´s last blog ..Wall Mount Drying Rack =-.
May 6th, 2010 at 6:00 am
The airbrush is very useful. as a parent of 1 very energetic and artistic child we purchased an airbrush for his hobby a while back. even I have got into using it and really enjoy the variety of designs that you can create with it.
May 15th, 2010 at 9:32 pm
I recently bought an airbrush and since then it’s just sat in it’s little container gathering dust, as I have not the time at the moment to use it, but after reading this hub I shall give it a squirt!!
May 19th, 2010 at 10:35 pm
I learned how to airbrush not too long ago and fell completely in LOVE!
.-= Confidential Conversions Review´s last blog ..Confidential Conversions Honest Review And Bonus =-.
June 30th, 2010 at 1:25 pm
I would like to find an airbrushing tool that can use UV paints. This way the airbrushing can really come out at night, under black lights. Does anyone know if this is possible?
.-= Stan@el wire driver´s last blog ..Run Safer At Night =-.
July 4th, 2010 at 2:33 am
Great tips with a full explanation of how airbrushing works. I was considering getting an airbrush job for my truck, and this makes me want it even more.
July 5th, 2010 at 10:35 am
What kind of airbrush would you use for body painting? I love the work I’ve seen at places like Fantasy Fest in Key West.
.-= Kelly @ Costume for Babies´s last blog ..Shrek Costume for Babies =-.
July 19th, 2010 at 9:51 am
A few years ago I was creating fun designs on skateboards for the neighborhood skaters and really honed my airbrush skills on their boards. It was a great way to practice and not get too upset when things didn’t work out the way I wanted because the kids would just trash the designs when they skated.
.-= Mark@Thomas Kinkade Prints´s last blog ..Cheap Pussycat Scratching Tree Furniture =-.
July 25th, 2010 at 3:49 pm
Airbrush were really good to use when making shirt designs. While I like silkscreening the most, nothing beats the unique individual design that I could come up with while using airbrush. customers also digs them so much and you can also charge higher than the usual cost and that’s already a plus!
.-= Joe@Bakersfield Divorce´s last blog ..Uncontested Divorce – An In-Depth Perspective =-.
September 14th, 2010 at 10:40 am
The double action airbrush if definitely the better option although, as you say, it is more expensive. Nevertheless, you get what you pay for with anything, and I’ve found it to be money well spend buying the double action option – the results I’ve achieved have certainly been more professional.
September 21st, 2010 at 7:29 am
Hi, Your post is good and well explained post. I like the airbrush art dresses very much. One of my friend is fashion designer and she is good in her field. Recently she had bagged an award for best costume designer from the state mayor. I am proud of her. She is using airbrush for making art and design on her own dresses for giving new look to that costume.
October 5th, 2010 at 7:21 am
Hey, I am art loving guy and I always used to make good painting on wall, canvas and also on dress too. I have around 30-40 dresses, on which I had painted wonderful designs for good and stylish looks. While painting on dress, I use airbrush.