Definition - What does Feathering mean?
Feathering is the process of decreasing the edge thickness of a coat film that has been applied to prevent the corrosion of a material. It is done in order to create an even, smooth application area to a surface that has been partially corroded before applying a fresh coat.
Corrosionpedia explains Feathering
Feathering has standards and practices that should be consulted during application. These codes dictate surface preparation standards.