Спереводом! a seam is row of stitching that holds two or more layers of fabric together . seams shape fabric to fit your body. he use of certain methods to make seams can add expensive detailing to the pattern design . to begin the operation it is necessary to thread your machine. machine stitches are divided into two types straight and zigzag. the straight-needle machine makes only straight stitches, unless a special attachment is used; whereas the zigzag machine can create both . regulation stich. this is the stitch used for реrmanent stitching such as seams , darts and tucks. the length and tension of the stick may vary according to the fabric used. on most medium-weight fabrics , the regulation stitch is about 12 stitches to the inch : sheers require a finer stitch (16 to the inch) ; heavy or coarse fabrics generally take 8 to 10 stiches to the inch. basting stich. basting stich are used for temporary joining of sections or details which may require reworking when the garment is fitted or for marking. the longest stich on the , machine (6 to 8 per inch) and a contrasting thread should be used so that the markings and bastings are easily seen and easily removed. the same tension on the machine is used as you do for permanent stitching on the fabric. to remove basting , the needle thread should be clipped every few inches and pulled out the bobbin thread using small . sharp-pointed scissors.