When using SP-207 to prime bare metal scratches, what should you ensure?

When using SP-207 to prime bare metal scratches, ensuring that you overlap the paint by 1/8 of an inch is essential for creating a strong bond between the primer and the surrounding area. This overlap helps to provide a seamless transition between the primed and unprimed surfaces, which is crucial for optimal adhesion and coverage. It prevents the possibility of rust or corrosion starting at the edges of the primer, where it could be less effective if there’s a gap. Adequate overlap also helps in blending the primer with the paint applied later, resulting in a more uniform finish and enhancing the durability of the repair.

The other options, such as leaving a gap in the overcoat, using a thicker layer of paint, or applying only one coat, do not contribute positively to the quality of the priming process. Gaps can create weak spots, a thicker layer might cause issues with drying and adhesion, and applying only one coat may not provide sufficient protection or coverage, making proper overlap a critical step.