The selection of an appropriate needle is critical when using an overlock machine to sew denim fabric. This is because denim’s density and thickness present unique challenges. Employing the wrong needle can lead to skipped stitches, broken threads, and even damage to the overlock machine itself. A needle designed for denim is engineered with a sharper point and a reinforced shank to penetrate the tough material without deflecting or breaking. For example, a size 90/14 or 100/16 denim needle is often recommended for medium- to heavy-weight denim.
Using the correct needle provides several key benefits. It ensures a clean, professional finish on seams, reduces the risk of fabric damage, and contributes to the longevity of both the project and the sewing machine. Historically, tailors and seamstresses understood the importance of matching needle type to fabric type, adapting techniques over time to accommodate new materials like denim. Proper needle selection minimizes thread breakage, saving time and resources, and leading to more durable and aesthetically pleasing finished goods.