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How to Fell a Tree Using a Chainsaw

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The Top Cut and the Bottom Cut Makes the Notch
Timber Fellers Notch

Timber Fellers Notch

The Top Cut

The top cut is the first of two cuts that result in a V-shaped notch. The notch is made on the side of the tree that you want it to fall. Here is the procedure for making a top cut:

Starting Point -- Begin at any height as long as you allow enough room for the undercut.
Angle of Attack -- Cut downward at an angle consistant with the type of notch you are making. Many people use the Humbolt notch which uses a horizontal top cut and allows for using the saw's sight.
Ending Point -- Stop when the cut reaches ¼ to 1/3 of the trunk's diameter or when the cut reaches 80% of the tree's diameter at chest level.

Making the Conventional Cut - OSHA

The Bottom Cut

The bottom or undercut is the second of two cuts that result in a V-shaped notch. The notch is made on the side of the tree facing the direction that you want it to fall. Here is the procedure for making a bottom cut:

Starting Point -- Begin at the level that will create at least a 70 degree notch opening.
Angle of Attack -- Cut upward at an appropriate angle - 20 degrees for an Open-face notch.
Ending Point -- Stop when the cut reaches the end point of the face cut.

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