![]() The trigger is how you control the spray. This third part is where the user's skill comes into play. Additionally, it’s more difficult to execute detailed work with this type of mixing. The downside is that the spray can be uneven or slightly lopsided, which produces patterns that are more concentrated on one side than the other. An airbrush with internal mixing must also be cleaned more frequently to ensure the tool stays at peak performance.Įxternal: External mixing allows you to use thicker paint, and it’s an easier unit to clean in general. On the negative side, this type of mixing works better with thinner paints because it clogs far more easily than external mixing. This gives you a well-balanced distribution of paint, which will allow for greater control. Internal: The internal mix offers the most consistent, smooth result because the atomization of the paint is better with this method. There is some debate about exactly what these terms mean in a technical sense, but rather than get involved in that, we'll explain how each of these mixing points can be beneficial to you. There are two options: internal or external. This is the location where the paint gets mixed with the airstream. Now that you know the three ways to get the paint into the airstream, we can move on to the mixing point. The downside is the cups are a little more costly, they can be harder to clean, and the spraying behavior will vary from attachment to attachment. It also can hold more paint, and you can use it at any angle you like – even lying on your back. In most instances, it’s easier to see what you’re doing with a side feed than it is with a gravity feed. Depending on the cup used, it can function as either a gravity feed or a siphon feed. Side: This type of airbrush is best thought of as an adaptable hybrid. ![]() In short, a siphon feed is best for covering large areas with less detail. Additionally, the bottle must always contain more paint than you need for it to coat evenly. On the downside, it takes more air pressure to function, so it’s much harder to do detailed work with this type of airbrush. The benefit of this type of feed is it’s less expensive and, if you have several bottles, each can contain a different color to make changing colors easier. As the air rushes out, the paint is drawn up through a small tube and then atomized and sprayed. Siphon: On this type of airbrush, the paint bottle is located lower than the nozzle. The downside is that the cup doesn't hold much paint, and it requires a little more diligence to clean. The result is that it increases your ability to produce detailed work. The main advantage to using a gravity feed is that it requires less air pressure to operate. Gravity: An airbrush that is fed by gravity simply means the cup that holds the paint is higher than the nozzle. Each delivery system has its advantages, and the type of feed you ultimately choose will be based on your preference. There are three ways to get your paint into the airbrush so it can be atomized and applied to the surface you’re working on. ![]() The following sections explore each of these aspects in a little more depth. The trick is to examine the three main aspects of the tool so you can determine the type of airbrush that’s best for you: how the paint feeds into the airbrush, where the paint and the air mix, and how much control you have over the air and the paint. ![]() If you’ve never done airbrushing before, picking out your first airbrush can be overwhelming. The most important thing to practice when you first start using an airbrush is control. ![]()
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