ASE Painting and Refinishing (B2) Practice Test

A split spray pattern can occur when air pressure is too high during the application process. High air pressure can cause the paint to atomize excessively, leading to a dispersed and uneven spray pattern. This results in the paint droplets separating and not landing on the surface as intended, creating a split effect. Maintaining optimal air pressure is crucial in achieving a consistent, even distribution of paint to ensure a smooth finish on the surface being painted.

Other factors, such as low material viscosity or improperly mixed paint, can also impact spray patterns, but they typically lead to different issues, such as drips or incomplete coverage rather than a split pattern. A worn-out spray nozzle can cause problems like uneven spraying or poor atomization, but it is not directly linked to causing a split spray pattern specifically. Understanding the role of air pressure is essential in mastering spray painting techniques.