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Feeding the tool in the wrong direction causes 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
become slightly canted in the groove, and can kickback. When a cut-off wheel
grabs, the wheel itself usually breaks. When a rotary file, high-speed cutter or
tungsten carbide cutter grabs, it may jump from the groove and you could lose
control of the tool.
Additional safety instructions for grinding and cutting-off operations
Safety warnings specific for grinding and abrasive cutting-off operations:
a)
Use only wheel types that are recommended for your power tool and only for
recommended applications. For example: 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 mandrels
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. Overstressing 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 power tool directly at you.
e)
When the 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 to remove the cut-off wheel from the cut while
the wheel is in motion otherwise kickback may occur. Investigate and take
corrective action to eliminate the cause of wheel pinching or snagging.
f)
Do not restart the cutting operation in the workpiece. Let the wheel reach full
speed and carefully re-enter the cut. The wheel may bind, walk up or kickback if
the power tool is restarted in the workpiece.
g)
Support panels or any oversized workpiece to minimize the risk of wheel pinching
and kickback. Large workpieces tend to sag under their own weight. Supports
must be placed under the workpiece near the line of cut and near the edge of the
workpiece on both sides of the wheel.
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