A sweater at ordinary times is always difficult to avoid cut, knitted and sweater are kept up, as long as a line, it is easy to lead to large area to take off the line, so we must carefully check the clothes when you go out. When wears off, also do not pull. If found to have signs of silk, such as cuffs, collar, shoulders joining together, small needle can be used to choose the same color yarn to take off the skewer needle at the beginning of the line, to prevent the worse.