What is the recommended rule regarding the physical size of the object and spray pattern?

Using the largest possible spray pattern that is consistent with the size of the object is the best practice in spray painting. This approach helps to ensure an even application of the material while minimizing the number of passes needed to cover the surface. A larger spray pattern can effectively cover more area in a single pass, which not only saves time but also reduces the risk of creating overlapping spray lines or uneven coverage that can occur when using a smaller pattern.

Choosing the appropriate spray pattern size based on the object's dimensions is crucial; it allows for increased efficiency and helps achieve a better finish quality. Additionally, a larger spray pattern can reduce the buildup of overspray, which can occur when the pattern is too small for the project size. This careful consideration is essential in professional painting and refinishing work, as it enhances the quality of the final product while improving workflow.