union lockstitch sewing machine

Conclusion

An industrial long arm sewing machine is designed for heavy-duty sewing applications, offering an extended arm length that allows for greater flexibility and space when working with larger pieces of fabric. These machines are ideal for quilting, upholstery, and any project that involves handling sizable materials, such as curtains, blankets, and other bulky items.

The lock stitch is formed when the needle penetrates the fabric, carrying the upper thread down into the fabric. The bobbin, located beneath the needle plate, feeds the lower thread and forms a lock with the upper thread, resulting in a firm stitch that is visually appealing on both the front and back of the fabric.

Strong sewing machine needles are specifically designed to withstand the unique challenges presented by heavy materials. These needles are typically made from high-quality steel and feature a reinforced shaft that provides added strength and durability. Common types of strong needles include the jeans needle, leather needle, and heavy-duty needle, each tailored to handle specific fabrics. For instance, the jeans needle has a thicker, more robust point that effortlessly penetrates multiple layers of denim, while the leather needle features a wedge-shaped tip designed for sewing through tough materials like leather and heavy canvas.