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threaded clamp nut is tightened, check the
orientation of the threaded clamp nut. If a
thin wheel is installed with the pilot on the
clamp nut against the wheel, it will spin
because the height of the pilot prevents the
clamp nut from holding the wheel.
SURFACE GRINDING WITH GRINDING WHEELS
1. Allow the tool to reach full speed before
touching the tool to the work surface.
2. Apply minimum pressure to the work
surface, allowing the tool to operate at
high speed. Grinding rate is greatest
when the tool operates at high speed.
3. Figure O - Maintain a 20˚ to 30˚ angle
between the tool and work surface.
4. Continuously move the tool in a forward
and back motion to avoid creating
gouges in the work surface.
5. Remove the tool from work surface
before turning tool off. Allow the tool to
stop rotating before laying it down.
EDGE GRINDING WITH GRINDING WHEELS
Wheels used for cutting and edge grinding
may break or kick back if they bend or twist
while the tool is being used to do cut-off
work or deep grinding. To reduce the risk of
serious injury, limit the use of these wheels
with a standard Type 27 guard to shallow
cutting and notching (less than 1/2 inch
(13mm) in depth). The open side of the
guard must be positioned away from the
operator. For deeper cutting with a Type 1
cut-off wheel, use a closed Type 1 guard.
See pages 13 and 14 for more information.
1. Allow the tool to reach full speed before
touching the tool to the work surface.
2. Apply minimum pressure to the work
surface, allowing the tool to operate at
high speed. Grinding rate is greatest
when the tool operates at high speed.
3. Position yourself so that the open-
underside of the wheel is facing away
from you.
4. Once a cut is begun and a notch is
established in the workpiece, do not
change the angle of the cut. Changing the
angle will cause the wheel to bend and
may cause wheel breakage. Edge grinding
wheels are not designed to withstand side
pressures caused by bending.
5. Remove the tool from the work surface
before turning the tool off. Allow the tool
to stop rotating before laying it down.
Do not use edge grinding/cutting wheels for
surface grinding applications because these
wheels are not designed for side pressures
encountered with surface grinding. Wheel
breakage and injury may result.
SURFACE FINISHING WITH SANDING
FLAP DISCS
1. Allow the tool to reach full speed before
touching the tool to the work surface.
2. Apply minimum pressure to work
surface, allowing the tool to operate at
high speed. Sanding rate is greatest
when the tool operates at high speed.
3. Figure P - Maintain a 5˚ to 10˚ angle
between the tool and work surface.
4. Continuously move the tool in a
forward and back motion to avoid
creating gouges in the work surface.
5. Remove the tool from work surface
before turning tool off. Allow the tool to
stop rotating before laying it down.
MOUNTING SANDING BACKING PADS
Turn off tool and remove battery before
making any adjustments or removing or
installing attachments or accessories.
NOTE
: Guard may be removed when
using sanding backing pads
Proper guard must be reinstalled for grinding
wheel, sanding flap disc, cutoff wheel,
wire brush or wire wheel applications after
sanding applications are complete.
1. Figure Q - Place or appropriately
thread backing pad (13) on the spindle.
2. Place the sanding disc (14) on the
backing pad (13).
3. While depressing spindle lock, thread
clamp nut (8) on spindle, piloting the
raised hub on the clamp nut into the
center of san ding disc and backing pad.
4. Tighten the clamp nut by hand. Then
depress the spindle lock button while
turning the sanding disc until the
sanding disc and clamp nut are snug.
5. To remove the wheel, grasp and turn
the backing pad and sanding pad while
depressing the spindle lock button.
USING SANDING BACKING PADS
Choose the proper grit sanding discs for
your application. Sanding discs are available
in various grits. Coarse grits yield faster
material removal rates and a rougher finish.
Finer grits yield slower material removal and
a smoother finish.
Begin with coarse grit discs for fast, rough
material removal. Move to a medium grit
paper and finish with a fine grit disc for
optimal finish.
Coarse
Medium
Fine Finishing
Very Fine Finishing 150 - 180 grit
1. Allow the tool to reach full speed before
touching tool to the work surface.
2. Apply minimum pressure to work
surface, allowing the tool to operate at
high speed. Sanding rate is greatest
when the tool operates at high speed.
3. Figure R - Maintain a 5˚ to 15˚ angle
between the tool and work surface. The
san ding disc should contact approximately
14
16 - 30 grit
36 - 80 grit
100 - 120 grit
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