The angle between the Heel Featherline Plane, the sharply defined edge of the heel seat. It gives a clear straight definition to the line where the heel block of the shoe meets the body of the shoe.
— Bill Bird, Anatomy of a Shoe Last
The angle between the Heel Featherline Plane, the sharply defined edge of the heel seat. It gives a clear straight definition to the line where the heel block of the shoe meets the body of the shoe.
— Bill Bird, Anatomy of a Shoe Last