What is the function of a serger sewing machine?

The primary function of a serger sewing machine is to trim edges and sew seams simultaneously, which helps prevent fraying of fabric. This machine uses multiple threads and specialized stitch formations that provide a clean, professional finish to the raw edges of fabric. Sergers are particularly well-suited for knit fabrics and materials that require elasticity, as they allow for stretch without compromising the integrity of the seam. By combining the role of trimming and overlocking—in one step—sergers save time and ensure durability, making them an essential tool in garment construction and professional sewing. The capabilities of a serger extend beyond mere edge finishing; they also improve the overall look and longevity of the seams in a finished garment.