Soon airbrushing would be used to paint Pin-Up girls on to the American planes during WWII. This is where airbrushing started showing up in the more modern world in the form of art. In the 1940 Walt Disney would show the world a new use for airbrush art. Walt Disney would take airbrush art to the animated screen. The trigger will control the air and the amount of paint that comes out is determined by the needle adjustment on the back of the airbrush handle. Dual action is when the trigger on the airbrush controls both the air and paint. The trigger is pressed down for the air and back for the paint. Now when it comes to the feed on the airbrush there are three types of feeds that you can choose from. Also some acrylic paints require that they be heat set if used on clothing. You can heat set by placing a protect cloth between the design and the iron and ironing the design or you can turn the material inside out and place in the dryer on high heat. If the acrylic does not require heat setting on fabrics then you should still protect the design from fading when washed. Expert instructors include Peter West and Pamela Shanteau who hold classes at the Learning and Product Expo: Art for beginners through to advanced. AirBrush Action offers their Airbrush Getaway Workshops that run from a one day class to four day classes and are located in Las Vegas, Nevada. The workshops offered cover airbrush t-shirt art, murals on steel introduction, achieving photorealism, pinup art, pin striping and much more on airbrush art. When the prep work is done right and the customer understands the care instructions they can get many days of realistic looking artwork on their bodies. With the time and cost of creating great realistic airbrush art tattoos one does not want it to fade within a couple of days. While an experienced airbrush artist may know this a beginner may not, so it is worth mentioning. Damage to the air cap and head assembly will effect the performance of your airbrush. Thus like the needle you will be unable to create desirable airbrush art. Both the needle, air cap and head assembly can be purchased at almost any craft or hobby shop that sells airbrushes and airbrush parts. The airbrush trigger is what allows you to actually operate the airbrush.