What happens if the outline of a pin stripe is not completely removed before topcoating?

If the outline of a pin stripe is not completely removed before applying the topcoat, it can indeed remain visible after the topcoat is applied. This is due to the fact that paint is often translucent, and any underlying colors or patterns—including pin stripes—can show through. If the surface isn't thoroughly prepped to eliminate the pin stripe outline, the topcoat will not mask it effectively, resulting in a finish that displays those unwanted lines or patterns. This visibility can detract from the overall appearance of the vehicle, as it can look unprofessional and inconsistent. Proper surface preparation is essential in painting and refinishing to ensure that the final product meets aesthetic and quality standards.