1: Determine the owner of the tree forward to consider the wind direction, the tilt of the tree, the location of large branches. The convenience and other factors of working after sawing trees.
2: When clearing the area around the trees, we should also consider the coverage area when the trees fall down, ensure the safety in the area, and arrange a good footing and retreat.
3: Rest assured in the trees opened a third of the V-shaped notch diameter.
4: Open a saw cutout on the other side of the V-notch, slightly higher than the V-notch.