Sewing machine classification
This kind of stitch used in the shrinkage of small cotton, wool or leather and other sewing materials, front and back shape the same,
From the cross-section of the stitch, the two stitches like the two locks locked each other, so called the lock stitch.
it consists of two sutures, like twisted rope as intertwined, the intertwined point in the middle of the sewing material.
Sewing machine stitches can be summarized as lock stitch and chain stitch two categories. Lock stitch is the most common,
There are many ways to classify sewing machines, and it is more common to distinguish between stitches and uses.
