In the 1970s, a professional skills competition for forestry workers was created that tested five disciplines based on their daily work: tree felling, chain fitting, bucking by combined cuts, precision bucking and limbing.
In this article, we present some basic information about bucking by combined cuts.
Bucking by combined cuts: A straight cut in two steps
Contestants must cut off a disc measuring 30 to 80 mm in thickness from two tree trunks lying on saw horses at an angle of 7 degrees to the horizontal plane so that the angles pointing up and down are the same in opposite directions. Contestants must first cut upwards from the bottom into the centre of the trunk, and then cut from the top of the trunk downwards into the centre. The most points are awarded to those contestants whose cuts from the bottom and top meet each other in the middle without breaching the thresholds marked on the side and whose discs are cut off at right angles to the longitudinal axis of the trunk.
The competition focuses on how well participants can handle a chain saw. They are evaluated on their speed, accuracy and safety in each discipline. A few tenths of a millimetre often mean the difference between victory and defeat.
STIHL supports the World Logging Championships at both the national and international levels.
Here you can find an overview of all disciplines of the world logging championships.