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- A sewing machine creates different types of stitches by controlling the movement of the needle and the fabric in different ways.
- Different types of stitches are achieved by adjusting the tension of the thread, the length and width of the stitch, the type of stitch selected (straight stitch, zigzag stitch, decorative stitch, etc.), and the speed at which the machine is operated.
- The machine uses a combination of a bobbin thread and a needle thread to form the stitches, and the placement of these threads determines the appearance and structure of the stitch.