1. The speed of the white steel knife cannot be too fast. 2. The copper work is thicker and less white steel knife, and more use of flying knife or alloy knife. 3. When the workpiece is too high, it…
1. The speed of the white steel knife cannot be too fast. 2. The copper work is thicker and less white steel knife, and more use of flying knife or alloy knife. 3. When the workpiece is too high, it…