KICKBACK...WHAT CAUSES IT AND WAYS TO HELP PREVENT IT (Fig. 4)
The Causes of Kickback
\
Correct Blade Depth
Blade Is Set Too
Deep
Fig. 4
1, Kickback isa sudden reaction to a pinched,
bound or misaligned saw blade, which
causes an uncontrolledsaw to lift up and
out of the workpiece and toward the operator,
2. When the blade is pinched or bound tightly
by the kerr closing down, the blade stalls
and the motor reaction drives the unit rapidly
back towards the operator.
3. If the blade becomes twisted or misaligned
in the cut, the teeth at the back edge of the
blade can dig into the top surface of the
wood. This causes the blade to climb out
of the kerr and jump back towards the operator,
4. Sawing into knots or nails in the workpiece
can cause Kickback.
5. Sawing into wet or warped lumber can
cause Kickback (see Fig. 5a)o
6, Forcing a cut, or not supporting the workpiece
correctly can cause Kickback (see Fig. 5a).
7. Kickback isa result of toot misuse and/or
incorrectoperating procedures or conditions
It can be avoided by taking the proper
precautions, on page !7.
Fig. 5
Right
UlUUll,i, i i
Fig, 5a
16
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