When discussing repairs, who is correct about using an adhesion promoter after grinding the base material?

Using an adhesion promoter after grinding the base material is considered a crucial step when preparing a surface for paint or coatings in auto body repair. An adhesion promoter enhances the bonding between the substrate (such as metal or plastic) and the primer or paint applied afterward. This is particularly important on surfaces that have been ground down, as grinding can create irregularities and remove any existing surface treatment that might otherwise help the paint adhere.

When both technicians agree on the importance and use of an adhesion promoter in this context, it indicates a shared understanding of best practices in auto body repair. This consensus reinforces the idea that both technicians recognize the role of the adhesion promoter in improving the longevity and effectiveness of the repairs, ensuring that the materials used will not peel or become compromised over time.