Big bag sewing machine

Purchasing a sewing machine is an investment, and Master Tools understands the importance of ongoing support. The brand is known for its exceptional customer service, offering guidance and resources for troubleshooting and enhancing the sewing experience. From instructional videos to user manuals, users can find the help they need to resolve any issues and maximize their use of the machine.

One of the primary advantages of using a twin needle sewing machine is its ability to produce professional-looking hems, particularly on knit and stretchy fabrics. Traditional single needles can struggle with these materials, often leading to puckering or distortion. However, a twin needle allows for the sewing of two lines of stitches while keeping the fabric securely in place. This results in a flat, well-finished hem, which is essential for garments designed to fit comfortably.

Design and Mechanism

The single needle lock stitch is achieved using a sewing machine equipped with a needle and a bobbin. The process begins when the needle pierces the fabric, carrying the upper thread down into the fabric layers. As the needle goes down, the bobbin, which is located underneath the fabric, rotates. The upper thread wraps around the bobbin thread, forming a stitch. When the needle pulls back up, the thread tightens, securing the stitch in place.