21
22
If
the tree has large buttress roots, cut into the largest
buttresses vertically first (horizontally next) and remove
(ill.
21).
Then, determine the placement of the felling notch (ill. 22).
The felling notch when properly placed determines the
direction
in
which the tree will fall.
It
is
made perpendicular
to
the line of fall and should
be
as close to the ground as
possible. Cut the felling notch to a depth of about one-fifth
to
one-fourth of the trunk diameter (ill. 23).
It
should
be
in
no
case higher than it
is
deep. Make the felling notch
very carefully.
Begin the felling cut slightly higher than the felling notch
and on the opposite side of the tree (ill. 23). Then cut
horizontally through towards the felling notch. Apply the
chain saw with its spikes directly behind the uncut portion
of wood and cut toward the notch (ill. 24). Leave approx-
imately
1/
10
of the tree diameter uncut. This
is
the hinge
(ill. 24).
Do
not cut through the hinge because you could
lose control of the direction of the fall. Drive wedges into
the felling cut where necessary to control the direction
of the fall. Wedges should be of wood, light alloy or
plastic-
never of steel, which can cause kick-back and damage
to
the chain.
23
24
Hinge
--1-4>1
Felling notch
15
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