What Is Whip Stitch In Sewing Wayne Arthur GalleryOvercast is a stitching technique that involves creating small up and down stitches in order to tightly join two cloth pieces together. This approach gives resilience and prevents the material from unraveling. The sew together may be used for a variety of sewing projects, including finishing the edge, sewing appliques, or even creating blankets. It provides a clean and skilled look to the finished item.