What is another factor that can contribute to dope blushing?

Dope blushing occurs when the dope (a type of paint used in finishing aircraft surfaces) becomes milky or whitish in appearance, which can be influenced by several factors. Moisture in the spray system is a key contributor to this phenomenon because when moisture combines with the solvents in the dope, it can cause the paint to lose its clarity as it dries. This is particularly important in conditions of high humidity or if water has inadvertently entered the spray system. Ensuring that the spray system is dry and free of moisture helps in achieving a clear finish without the blushing effect.

Other factors, such as thinning the dope excessively, applying too many coats too quickly, or using inappropriate application brushes, may affect the application process, but the presence of moisture directly interacts with the chemical properties of the dope, making it a primary factor in dope blushing.