Stitch length is measured in millimetres and is usually shown on your machine as a number. You can adjust the number to adjust your stitch length. 1.5mm - 2mm is perfect for very light fabrics such as chiffon, voile and silk. Using a shorter stitch length helps prevent puckering. 2.5mm - 3mm is your go-to length for most mid-weight fabrics. 3.5mm is a great topstitching length. 4mm is for basting. The longer stitch length makes it easier to remove the stitches when no longer needed. Remember, th