The point at which they come together is in the head assembly. The external mix is where the air and paint come together outside of the head assembly or the fluid assembly. These airbrushes create a large dot pattern. Larger airbrushed areas are better done with the external mix. Since with the larger dot pattern you are able to spray more areas in less time. Take a look at children's airbrush art kits that require the child to blow through one end of tube to create the airbrushed art. Now ancient forms of airbrush art have bled over to modern day children's crafts. In 1893 the world seen a more modernized version of airbrushing when Charles Burdick patent the first airbrush device. This is a major amount of time saved for the artist as well as the recipient that must stay still during this process. Another great thing with using airbrush art to create tattoos over real tattoos, is that there is no risk of infection due to piercing of the skin with a needle. There is no healing time needed with airbrushed tattoos. Pay special attention to the threads on your airbrush. The threads are located on the head assembly and where the air hose connects to your airbrush. If these threads should ever become cross-threaded then you could end up with an air leak. An air leak will effect the function of your airbrush so make sure to take care not to cause any cross-threading in these areas. Airbrushing nails to airbrushing cars is explained in great detail to help you advance further no matter what surface you like to put your airbrush art on. Airbrush2: Concepts for the Advanced Artist by Radu Vero will help to teach the experienced artist more advanced techniques. By learning these advanced techniques the artist can start to create even more complex airbrush art. Javier Soto will deal with the use of bright colors, textures, highlighting and the use of kandies in creating a brilliant looking psycho clown. Kustom Pinstriping Techniques featuring airbrush artist Craig Fraser will show you all the aspects of pin striping. This video will show you everything you need to comprehend about pin striping so that you can reach professional level pin striping.