what is the difference between an overlocker and a serger

Zigzag sewing machines are designed to perform zigzag stitches, which are essential for tasks such as finishing raw edges, sewing stretchable fabrics, and creating decorative patterns. The price of a zigzag sewing machine can vary significantly based on features, brand, and intended use. On the lower end, basic models may start at around $100 to $200. These machines are usually lightweight, easy to use, and suitable for beginners or hobbyists who require simple stitching capabilities.

The lockstitch is formed by a combination of two threads the top thread, which is typically fed from the sewing machine’s needle, and the bobbin thread, which is located beneath the fabric. When the needle penetrates the fabric and completes its upward motion, the hook in the sewing machine catches the needle thread and loops it around the bobbin thread. This process tightly interlocks the two threads, forming a secure and balanced stitch.

A walking foot is a type of presser foot that features an additional set of feeding mechanisms on top of the fabric. Unlike standard presser feet that rely solely on the machine’s feed dogs to move the fabric beneath the needle, the walking foot grips the fabric from above and moves it in sync with the feed dogs below. This dual feeding action prevents slippage and ensures that all layers of fabric are fed evenly through the machine, which is particularly helpful when sewing thick or textured materials.

This combination of upper and lower threads creates a locked stitch, hence the name. The stitch type is denoted by the establishment of a series of continuous, parallel lines on the fabric's surface. The simplicity of the single needle lock stitch makes it a favorite among sewers; it can be easily manipulated for various fabric types and thicknesses.

Beyond clothing, hi-speed lockstitch machines are also utilized in industries such as upholstery, where durable seams are essential for furniture and other fabric-covered items. Additionally, the automotive industry employs these machines for manufacturing seat covers and interior fabrics, where strength and precision are paramount.