What is the purpose of sanding in the feather edging process?

Sanding in the feather edging process serves the essential function of preparing the surface for even layering. When feather edging is performed, the goal is to blend the repaired area seamlessly with the surrounding surface. By sanding, the technician smooths out the edges of the repaired paint or filler, which creates a gradual transition to the original surface. This uniformity is vital for ensuring that subsequent layers of paint adhere properly and cure evenly, resulting in a professional finish.

Creating a glossy surface is not the purpose of feather edging; instead, sanding typically induces a more matte texture that facilitates better paint adhesion. While reducing the amount of paint needed can sometimes result from careful sanding, it is not the primary goal. Additionally, removing all paint before a repair is far too aggressive a strategy when feather edging; rather, the intent is to retain as much of the original surface as possible for a coherent finish.