Learning to control and adjust your sewing machine tension will empower you to sew creatively. Before making any adjustments to the tension on your sewing machine, be sure that the machine is properly threaded. The thread in machine must feed through three main points on the sewing machine; the tension disks, the take-up, and the needle. The bobbin must also be threaded properly to enable the machine to form a good stitch. Bobbins have their own mechanism for controlling tension on the thread. Follow your sewing machine instructions book for proper threading.