You can use it. According to official website's inquiry about the sales of Butterfly sewing machines, it is known that magnets can be used to block the edges, which can make the sewing machine tie the knot straighter and make the needle and thread denser. Sewing machine is a machine that uses one or more sewing threads to form one or more stitches on sewing materials, so that one or more layers of sewing materials are interwoven or sewn together.