What is a Paint Thinner? 

Paint thinners are solvents used to reduce the viscosity of paint, varnishes, and lacquers. They are commonly used to make these coatings lighter and easier to apply, resulting in a smoother and more even finish. They can also be used to clean brushes, tools, and surfaces after applying coatings.

When it comes to airbrushing, using the correct thinner plays a crucial role in achieving the desired result. Airbrushing is a technique where paint is atomized and sprayed onto a surface, resulting in a fine and controlled application. They are used to thin the paint and reduce its viscosity, making it more suitable for airbrushing. This allows it to flow more smoothly through the airbrush and onto the surface, resulting in a more even and consistent finish.

Airbrush thinners are available in different types, each designed for specific types of paints. For example, acrylic thinners are used for acrylic paints, while enamel thinners are used for enamel paints. Using the correct type ensures that both are compatible, resulting in a smooth and even application.

Paint thinners are commonly used in hobby and modeling, where precision and detail are important. Acrylic paints have become a popular choice among hobbyists and modelers due to their quick drying time, water-based nature, and ease of use. However, acrylic paints can dry too quickly, resulting in clogging of the airbrush nozzle or a rough surface finish.

Paint retarders are used to thin the paint and slow down the drying process, allowing for a more even and controlled application. They also help to prevent clogging the airbrush nozzle, ensuring a smooth and consistent flow of paint. 

Using too much thinner can result in a loss of adhesion while using too little can result in a rough and uneven finish. It's also important to wear protective gear such as gloves and a mask when using thinners, as some of them can be harmful if inhaled or come into contact with the skin.

What is a painting medium?

A painting medium is a substance that is added to paint to modify its properties changing the texture, transparency, gloss, and drying time of paint, allowing artists to achieve a wide range of effects and techniques. 

Master Medium is acrylic and it is used to extend the drying time of acrylic paints, making them more workable and allowing for more subtle blending and layering of colors. It can also be used to create texture and impasto effects.

Paint mediums are typically added in small amounts and mixed thoroughly before application. The amount of medium used will depend on the desired effect and the type of paint being used.

Paint thinner, on the other hand, is a solvent used to thin the viscosity of the paint, making it easier to apply and they are typically added in larger amounts to achieve the desired consistency.