Flatlock Sewing Machine Lower looper

The flatlock lower looper is a component found in certain types of sewing machines, particularly those that are capable of performing flatlock stitches. Flatlock stitches are commonly used in activewear, sportswear, and stretchy fabrics to create strong, flexible, and flat seams.

In a sewing machine, the lower looper is responsible for carrying the lower thread and forming the underside of the stitch. In the case of a flatlock lower looper, it is specifically designed to create the flatlock stitch.

The flatlock stitch is created by interlocking the upper and lower threads on the fabric's wrong side while keeping the right side of the fabric flat. The flatlock lower looper plays a crucial role in this process by passing the lower thread through the fabric layers and interlocking it with the upper thread.

To set up the machine for a flatlock stitch, you would typically thread both the upper and lower loopers with thread of the same color or different colors for decorative effects. The flatlock lower looper will then form the bottom thread portion of the stitch while the upper looper and needle work in tandem to form the upper thread portion.

By adjusting the tension and stitch width settings on your sewing machine, you can control the appearance and strength of the flatlock stitch. The resulting seam is flat, flexible, and highly stretchable, making it ideal for sewing stretchy fabrics like knitwear, swimwear, and athletic garments.

It's important to note that not all sewing machines have a flatlock capability or a dedicated flatlock lower looper. If you're specifically interested in using the flatlock stitch, you should check your sewing machine's manual or consult the manufacturer to determine if it has this feature and to learn how to properly set up and use the flatlock lower looper.