Ryobi RRT4 - Grinding and Cutting Safety; Grinding and Cutting Precautions

7
Original Instructions
■ 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.
■ Do not attach a toothed saw blade.
Such blades create frequent kickback
and loss of control.
■ 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 causes the cutting
edge of the bit to climb out of the work
and pull the tool in the direction of this
feed.
■ 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.
Safety warnings specic for grinding
and abrasive cutting-o󰀨 operations
■ 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.
■ 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.
■ 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.
■ 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.
■ 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 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.
■ 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.
■ 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.