1. The machine is not flexible enough, it should be better with some oil.
2. The thread may be too thin, or the shuttle may be dirty.
3. The machine is too old.
Sewing machine, also known as tailoring machine or sewing machine, is a machine that uses one or more sewing threads to form one or more stitches on the sewing material to interweave or sew one or more layers of sewing material. It consists of four parts: head, base, transmission and accessories. The sewing machine was invented during the first industrial revolution, with the main purpose of reducing the workload of manual sewing in garment factories. In China in the late 1950s, sewing machines became one of the so-called four major pieces.
The sewing machine can sew cotton, linen, silk, wool, man-made fibers and other fabrics and leather, plastic, paper and other products. The stitches sewn are neat and beautiful, flat and firm, and the sewing speed is fast and easy to use.
