Editing Lockstitch (section)

===Zigzag===

Zigzag stitch geometry is produced when the needle moves rhythmically side to side while stitching, while the feed dogs are following only in the normal forward "four motion" movement.  Most lockstitch machines made after the 1960s are capable of doing this; older machines achieve the same stitch with a specialist presser foot which moves the fabric beneath the stationary needle.

Zigzag stitches are used when a stretchable stitch is required, such as when sewing stretchy fabrics.

{{main|Zigzag stitch}}

====Blind====

Blind stitch geometry is a derivative of the zigzag.  It is created in the same manner, except that the needle zigs to the side and then zags back only once every fourth or fifth stitch.  It is used to reduce the visibility of hems and other seam edges.

{{main|Zigzag stitch#Blind stitch}}