The next step was to spray the entire car with primer surfacer. We used PPGs low-VOC and California legal NCP 280 primer mixed with NCX 285 hardener. Here Martinez checks the evenness of the surface area by spraying a quick guidecoat (a light haze of black paint speckled onto the surface area). After the guidecoat is sanded, the remaining paint reveals low spots that will require another coat of primer surfacer to level out. If for some reason the surface area is still too low, you can use a thicker, lacquer-based, primer-compatible putty to cure this. The above photo shows that the guidecoat was completely removed, indicating a smooth, level surface area.