If you choose this option, you can eliminate the need reconfigure the serger in the transition to seam and back. In this case, the cost of such a pair is almost equal to the cost Pfaff Coverlock 4852. Species differences overlock weaves in the mechanism of the sewing machine weaving yarn provides shuttle. The design of the shuttle overlock not, but interlacing is provided with special looper. Number of stitches running overlock depends directly on what has serger looper.
Sutures obtained by means of upper and lower loopers Overlock Cheap overlock equipped with two looper – the top and bottom. In the photo red thread threaded into the upper looper, and the yellow to the bottom. Main interlacing performed with this design – trehnitochny obmetochny seam. The figure shows the face and back side of fabric with trehnitochnoy obmetochnoy line. On the front side (which turned up during the sewing), visible range stitches, forming a line parallel to the edge of the fabric. This line is made with a needle. Loop yarn red formed the upper looper. On the wrong side of the fabric passes the lower looper thread, which attaches almost invisible stitch on the needle.
Trehnitochny obmetochny seam is designed to handle the edges of the bulk materials and is suitable for sewing knitted fabrics with a whip at the same time slice. By adjusting the tension of threads this line can be modified and be used for other purposes. For example, if a taut thread lower looper, and simultaneously to weaken the needle thread tension, you get a stitch called ‘Trehnitochny flat seam Flatlock’.