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Further safety instructions for all operations:
Kickback and related warnings
Kickback is a sudden reaction to a pinched or
snagged rotating wheel, sanding band, brush
or any other accessory. Pinching or snagging
causes rapid stalling of the rotating accessory
which in turn causes the uncontrolled power
tool to be forced in the direction opposite of the
accessory’s rotation.
For example, if an abrasive wheel is snagged
or pinched by the workpiece, the edge of the
wheel that is entering into the pinch point can
dig into the surface of the material causing the
wheel to climb out or kick out. The wheel may
either jump toward or away from the operator,
depending on direction of the wheel’s move-
ment at the point of pinching. Abrasive wheels
may also break under these conditions.
Kickback is the result of power tool misuse and/
or incorrect operating procedures or conditions
and can be avoided by taking proper precau-
tions as given below.
a) Maintain a firm grip on the power tool
and position your body and arm to allow
you to resist kickback forces.
The ope-
rator can control kickback forces, if proper
precautions are taken.
b) Use special care when working corners,
sharp edges etc. Avoid bouncing and
snagging the accessory.
Corners, sharp
edges or bouncing have a tendency to snag
the rotating accessory and cause loss of
control or kickback.
c) Do not attach a toothed saw blade.
Such
blades create frequent kickback and loss of
control.
d) Always feed the bit into the material in
the same direction as the cutting edge
is exiting from the material (which is the
same direction as the chips are thrown).
Feeding the tool in the wrong direction cau-
ses the cutting edge of the bit to climb out
of the work and pull the tool in the direction
of this feed.
e) When using rotary files, cut-off wheels,
high-speed cutters or tungsten carbide
cutters, always have the work securely
clamped.
These wheels will grab if they be-
come slightly canted in the groove, and can
kickback. When a cut-off wheel grabs, the
wheel itself usually breaks. When a rotary
fi le, high-speed cutter or tungsten carbide
cutter grabs, it may jump from the groove
and you could lose control of the tool.
Safety warnings specific for grinding and
abrasive cutting-off operations:
a) Use only wheel types that are recom-
mended for your power tool and only for
recommended applications. For examp-
le: do not grind with the side of a cut-off
wheel.
Abrasive cut-off wheels are intended
for peripheral grinding, side forces applied to
these wheels may cause them to shatter.
b) For threaded abrasive cones and plugs
use only undamaged wheel mandrels
with an unrelieved shoulder flange that
are of correct size and length.
Proper man-
drels will reduce the possibility of breakage.
c) Do not “jam” a cut-off wheel or apply
excessive pressure. Do not attempt to
make an excessive depth of cut.
Over-
stressing the wheel increases the loading
and susceptibility to twisting or snagging of
the wheel in the cut and the possibility of
kickback or wheel breakage.
d) Do not position your hand in line with
and behind the rotating wheel.
When the
wheel, at the point of operation, is moving
away from your hand, the possible kickback
may propel the spinning wheel and the pow-
er tool directly at you.
e) When wheel is pinched, snagged or
when interrupting a cut for any reason,
switch off the power tool and hold the
power tool motionless until the wheel
comes to a complete stop. Never attempt
