👉 Overfolding is a process in which an object or surface is made to fold along a line that goes through its center. This can be achieved by applying a force perpendicular to the surface, causing the object or surface to curve back towards the center of curvature. For example, consider a book on a table. The book would be overfolded if it were placed at an angle and then moved slightly so that the top edge is parallel to the table. This would cause the book to curve back