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ineffective. Under these conditions, a rebound
cannot be prevented by the splitting wedge.
g) Use the appropriate saw blade for the riving
knife. For the riving knife to function properly, the
saw blade diameter must match the appropriate
riving knife and the body of the saw blade must be
thinner than the thickness of the riving knife and
the cutting width of the saw blade must be wider
than the thickness of the riving knife.
2) Cutting procedures warnings
a)
Danger: Never place your fingers or hands
in the vicinity or in line with the saw blade. A
moment of inattention or a slip could direct your
hand towards the saw blade and result in serious
personal injury.
b) Feed the workpiece into the saw blade only
against the direction of rotation. Feeding the
workpiece in the same direction that the saw
blade is rotating above the table may result in the
workpiece, and your hand, being pulled into the
saw blade.
c) Never use the mitre gauge to feed the
workpiece when ripping and do not use the rip
fence as a length stop when cross cutting with
the mitre gauge. Guiding the workpiece with the
rip fence and the mitre gauge at the same time
increases the likelihood of saw blade binding and
kickback.
d) When ripping, always apply the workpiece
feeding force between the fence and the saw
blade. Use a push stick when the distance
between the fence and the saw blade is less
than 150 mm, and use a push block when this
distance is less than 50 mm. "Work helping"
devices will keep your hand at a safe distance from
the saw blade.
e) Use only the push stick provided by the
manufacturer or constructed in accordance
with the instructions. This push stick provides
sufficient distance of the hand from the saw blade.
f) Never use a damaged or cut push stick. A
damaged push stick may break causing your hand
to slip into the saw blade.
g) Do not perform any operation "freehand".
Always use either the rip fence or the mitre
gauge to position and guide the workpiece.
"Freehand" means using your hands to support or
guide the workpiece, in lieu of a rip fence or mitre
gauge. Freehand sawing leads to misalignment,
binding and kickback.
h) Never reach around or over a rotating saw
blade. Reaching for a workpiece may lead to
accidental contact with the moving saw blade.
i) Provide auxiliary workpiece support to the
rear and/or sides of the saw table for long and/
or wide workpieces to keep them level. A long
and/or wide workpiece has a tendency to pivot on
the table's edge, causing loss of control, saw blade
binding and kickback.
j) Feed workpiece at an even pace. Do not bend or
twist the workpiece. If jamming occurs, turn the
tool off immediately, unplug the tool then clear
the jam.Jamming the saw blade by the workpiece
can cause kickback or stall the motor.
k) Do not remove pieces of cut-off material while
the saw is running. The material may become
trapped between the fence or inside the saw blade
guard and the saw blade pulling your fingers into
the saw blade. Turn the saw off and wait until the
saw blade stops before removing material.
l) Use an auxiliary fence in contact with the table
top when ripping workpieces less than 2 mm
thick. A thin workpiece may wedge under the rip
fence and create a kickback.
3) Kickback causes and related warnings
Kickback is a sudden reaction of the workpiece due
to a pinched, jammed saw blade or misaligned line of
cut in the workpiece with respect to the saw blade or
when a part of the workpiece binds between the saw
blade and the rip fence or other fixed object.
Most frequently during kickback, the workpiece is
lifted from the table by the rear portion of the saw
blade and is propelled towards the operator.
Kickback is the result of saw misuse and/or incorrect
operating procedures or conditions and can be avoi-
ded by taking proper precautions as given below.
a) Never stand directly in line with the saw blade.
Always position your body on the same side of
the saw blade as the fence. Kickback may propel
the workpiece at high velocity towards anyone
standing in front and in line with the saw blade.
b) Never reach over or in back of the saw blade
to pull or to support the workpiece. Accidental
contact with the saw blade may occur or kickback
may drag your fingers into the saw blade.
c) Never hold and press the workpiece that is
being cut off against the rotating saw blade.
Pressing the workpiece being cut off against the
saw blade will create a binding condition and
kickback.
d) Align the fence to be parallel with the saw
blade. A misaligned fence will pinch the workpiece
against the saw blade and create kickback.
e) Use a featherboard to guide the workpiece
against the table and fence when making non-
through cuts such as rabbeting.
A featherboard helps to control the workpiece in
the event of a kickback.