When polishing, the line of sight should be focused on the edge of polishing disk, and do not exceed the corner position to prevent throwing through the corner position. When throwing Yi sub-board, there are more corners and more planes with smaller areas, which can be used polishing disk to cast these planes.

How to change different postures according to different faces and choose which side of polishing disk to throw different planes. When polishing, when the polishing disk goes to the gap of the car body, press the stop polishing machine, then move the polishing machine in the opposite direction, and press the start button at the same time to move quickly, which is the way to deal with polishing disk when encountering danger.

The so-called danger is that the gap will cause polishing disk damage. What is difficult to deal with is the part on the verge of the gap. What tricks should be used to throw it, which can avoid the gap and the Department close to the gap.