Felling with a bore

A bore can be used with most felling methods and can be applied regardless of guide bar length and tree size. It is essential that the bore method is carried out in the correct manner.

If you depart from this method, there will be a major risk of kickback as the tip of the guide bar is used first. Apply full throttle and apply the bottom part of the guide bar tip (pulling chain) slightly behind the proposed hinge width. When the guide bar tip has entered, the guide bar is turned carefully until it is parallel with the directional notch. Now push the guide bar into the tree as deep as necessary. Adjust the hinge width at the end.

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    A different work technique is used for limbing thick branches than that used for thin branches. This applies to leaf trees and other trees with thick, extensive branches. The working technique often matches the technique used for crosscutting. In order to avoid splitting and the guide bar pinching, it is important that you use the correct technique and sequence.

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    Consider the crosscutting carefully, especially for larger logs. An incorrect work technique can be dangerous and cause the trunk to split or the guide bar to become pinched. First assess the tension in the trunk. Make it a habit to look at how the trunk reacts to being cut. You may have misjudged the tension.

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    Crosscutting - Compressive stress from the bottom

    Crosscutting trees which have compressive stress from the bottom should be done by following this technique.