used to sew the two pieces of fabric together. This stitch has multiple needles and creates a stitch perpendicular to the seam line. This creates a flat seam.
is the most common type of machine-sewn seam. It joins two pieces of fabric together face-to-face by sewing through both pieces, leaving a seam allowance with raw edges inside the work. The seam allowance usually requires some sort of seam finish to prevent raveling.
