Overcast is a sewing technique which involves making small in-out stitches to firmly fasten two cloth pieces together. This technique adds strength and stops the fabric from unraveling. The sew together may be used for a selection of stitching projects, such as finishing the edge, sewing appliques, or even creating blankets. It offers a tidy and professional look to the final piece.
5 Most Useful Basic Hand Sewing Stitches Stitch Clinic