What Points Should I Pay Attention To When Hitting The Board?

The strands of the back line are skew, while the lower part of the waist is just the outer surface thrown by the human body. In general, the province is located at the middle of the 1/4 waist, and does not play a direct role in the middle of the waist. If it is added to the process, it will conform to the characteristics of the human body. Attention should be paid when hitting the plate: 1, the amount of waist can not be completely sewn up, because the potential of oil saving is about 02 centimeters. 2, the seam of the waist is not easy to grow, and it is ideal to set 1 centimeters of rain. Because of the arc in the back of the oral exam, the seam length of the waist will be shortened after the seam is laid, so that in the sewing of the waist, the worker will instinctively pull out the back waist, which is the reason that causes the striations on the back waist.