Felling a tree is a precise operation that demands respect for the tool, the material, and the surrounding environment. A successful cut is not merely about bringing a vertical structure to the ground; it is about controlling the release of energy to guide the tree’s descent safely and efficiently. This process requires a blend of physical technique, spatial awareness, and adherence to strict safety protocols to ensure the timber is harvested without incident.
Preparing for the Felling
Before the chain makes contact with the wood, the work area must be meticulously organized. You must survey the site for potential hazards, including overhead power lines, unstable terrain, and the presence of other people or wildlife. Assess the tree’s natural lean, the weight of its branches, and the direction it is already predisposed to fall. Establishing a clear escape route is non-negotiable, as this path provides a safe corridor away from the falling trajectory once the tree begins to move.
The Notch: Creating the Hinge
The notch is the critical initial cut that dictates the direction and control of the fall. A hinge of wood left intact between the notch and the back cut acts as a pivot, guiding the tree down in the intended direction. The standard method involves creating a horizontal cut at a comfortable waist height, followed by an upward cut at a precise angle—usually between 20 to 30 degrees—to meet the first cut. The width of this hinge should generally not exceed one-tenth of the tree’s diameter to maintain structural integrity and prevent the tree from settling back or pinching the bar.
Face Notch vs. Humboldt Notch
The face notch, comprising the horizontal and upward cuts, is the most common technique for amateurs and professionals alike due to its predictable results.
The Humboldt or open-face notch involves making a single, large horizontal cut and then angling the bar upward to remove a wider wedge of wood.
This method creates a wider hinge, which can offer slightly more control in larger trees but requires greater precision to avoid complications.
The Back Cut: Releasing the Tree
Once the face notch is complete, the back cut is performed to sever the tree. This cut is made horizontally into the rear of the tree, slightly above the apex of the face notch. The key is to stop cutting before you reach the hinge, leaving a small, intentional hinge of wood to control the fall. As the tree begins to lean, you must immediately shut off the saw and retreat calmly along your predetermined escape route, never turning your back on the falling tree.
Managing Wind and Weight
Environmental factors can dramatically alter the physics of a felling operation. Wind can push the tree off its intended path, so it is crucial to assess the breeze direction and strength before starting. Similarly, the weight of the crown—the mass of branches and limbs—can cause a tree to fall faster or in a twisting motion. If the tree is heavily loaded, techniques such as bore cuts or using ropes may be necessary to manage the sudden release of top weight and ensure a safe landing.
Post-Felling Procedures
After the tree is on the ground, the work is far from over. You must immediately assess the tension within the fallen trunk, especially if it is resting against another tree or under tension. Cutting branches, known as snagging, should be done from the safest side of the trunk, often requiring you to work from the uphill side if the tree is on a slope. Finally, the trunk must be bucked into appropriate lengths for transport or processing, ensuring the final cuts are made with the same precision applied at the beginning of the operation.
