A magnetic seam guard (commonly known as a magnetic seam guide) is a small, removable tool used to help sew straight or curved lines with a consistent seam allowance. It features a powerful magnet that attaches directly to the metal throat plate of most sewing machines. By acting as a physical fence, it prevents fabric from shifting, making it an essential accessory for both beginners and professionals working on projects like quilting, hemming, or garment construction.
Use on all sewing machines.