Tree cutting technique.
Each tree cut should be done this way, so that its plane is in the most favorable position due to the already discussed healing ability. The removal of large limbs requires particularly high accuracy. Besides, cutting should be made with such tools, which ensure the greatest possible smoothness of the resulting wound. Only the smooth surface of the wood can be tightly covered by the healing tissue. In some cases, unevenness can facilitate decomposition of the wood due to water retention. Such unevenness is most easily created when cutting softwood trees. Blurred instruments also tear and tear the bark within the cambial layer at the edges of the wound that is being formed.
This happens quite easily in the beginning of the growing season. The formation of healing tissue in such places is very uneven. In cases of uneven detachment of the cortex, the healing tissue that forms will not reach the edge of the wound and will not close it (so there will be no healing). Minor saw-cut wounds should be smoothed out with a sharp knife.
Thin branches, diameter to 2-3 cm, is cut with secateurs, with a sharp knife, sickle or dipper. The branches should be supported while cutting, which prevents the bark peel off in the lower part.
Cutting off thick branches and limbs is much more difficult and cannot be done with "one stroke". The considerable weight of these branches makes it impossible to support them.
Drawing. Breakage and detachment of bark and wood below the site of the poorly made cut.
The figure shows the result of trying to remove a limb by making one cut. In such cases, first cut off the branch at a greater distance from the root, and only then cut off the branch at the root. There are three steps in removing a thick branch, and even four cuts, the sequence of which is shown in the figures.
Drawing. The order of cuts when removing a thick branch.
Drawing. The order of cuts when removing one of the limbs in a narrow bifurcation.
The various hand saws and motor saws shown in the figure are used to cut thick branches and limbs.
Drawing. Hand and motor saws, used for trimming thicker branches and limbs.
Pruning branches in tall trees is quite technically difficult, due to the limited availability of some places, especially in the lateral and apical parts of the crown. Very often, different types of ladders are used for this purpose. Some of the side parts of the crowns can only be accessed by means of special extendable ladders of the fireman type or by a boom located on the car.
Some branches removed from higher parts cannot be cut completely due to technical reasons or due to the size that prevents shifting through a dense crown. Therefore, such branches are cut into smaller pieces and lowered down on ropes.