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•
When ripping, always use a rip fence or straight edge guide. This
improves the accuracy of cut and reduces the chance of the blade
binding.
•
Always use blades of the correct size and shape (diamond vs. round)
arbour holes. Blades that do not match the mounting hardware of the saw
will run eccentrically causing loss of control.
•
Never use damaged or incorrect blade washers or bolts. The blade
washers and bolt were specially designed for your saw, for optimum
performance and safety of operation.
CAUSES AND OPERATOR
PREVENTION
OF KICKBACK
Kickback is a sudden reaction to a pinched, bound or misaligned saw blade,
causing an uncontrolled saw to lift up and out of the workpiece toward the
operator.
When the blade is pinched or bound tightly by the kerf closing down, the
blade stalls and the motor reaction drives the unit rapidly back toward the
operator.
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 causing the blade
to climb out of the kerf and jump back toward operator.
Kickback is the result of tool misuse and/or incorrect operating procedures or
conditions and can be avoided by taking proper precautions as given below:
•
Maintain a firm grip with both hands on the saw and position your body
and arm to allow you to resist kickback forces. Kickback forces can be
controlled by the operator, if proper precautions are taken.
•
When blade is binding, or when interrupting a cut for any reason, release
the trigger and hold the saw motionless in the material until the blade
comes to a complete stop. Never attempt to remove the saw from the
work or pull the saw backward while the blade is in motion or kickback
may occur. Investigate and take corrective actions to eliminate the cause
of blade binding.
•
When restarting a saw in the workpiece, center the saw blade in the kerf
and check that the saw teeth are not engaged into the material. If the saw
blade is binding, it may jump up or kick back from the workpiece as the
saw is restarted.
•
Support large panels to minimize the risk of blade pinching and kickback.
Large panels tend to sag under their own weight. Supports must be
placed under the panel on both sides near the line of cut and near the
edge of the panel.
•
Do not use dull or damaged blades. Unsharpened or improperly set
blades produce a narrow kerf causing excessive friction, blade binding
and kickback.
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