Churn molding is a furniture technique that involves creating decorative grooves or flutes on the surface of a piece of furniture. These grooves are usually evenly spaced and parallel, resembling the marks left on churns used to make butter. Churn molding is often found on the legs, arms, or backrests of chairs, as well as on the edges of tables and other wooden furniture pieces. It is primarily used to enhance the aesthetic appeal of the furniture and add a sense of detail and elegance to the overall design. Zigzag molding occurring in Norman architecture.