Threading the bobbin on a Singer sewing machine is a fundamental step in preparing to sew. The bobbin is a small, cylindrical spool that holds the lower thread in a sewing machine. When the needle pierces the fabric, it creates a loop of upper thread on the top of the fabric and a loop of lower thread on the bottom. These loops interlock to form a stitch.
There are several benefits to threading the bobbin correctly. First, it ensures that the machine will sew smoothly and without jamming. Second, it helps to prevent skipped stitches, which can occur when the bobbin thread is not properly tensioned. Third, it can help to extend the life of the bobbin and the sewing machine itself.