kerf

Cut your kerf on the side toward the landing place, let the notch go half-way or a trifle more through the trunk.

When the first kerf is finished begin another one on the opposite side of the tree a little higher than the first one (Fig. 114).

Two pieces of wood are glued one on the top of the other, the required angle is transferred thereto, and the saw kerf made.

The first chips that flew were ten inches long, but they quickly dwindled as the kerf sank in.

The butt-kerf was two-thirds through the tree when Yan called "One minute up."