DeWalt DC411 Guide D'utilisation page 21

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 work-
piece, 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 pres-
sures 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.
WARNING: 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 break-
age and serious personal 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. 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
WARNING: To reduce the risk of serious personal injury, turn
tool off and and remove battery pack before making any adjust-
ments or removing/installing attachments or accessories.
NOTE: Guard may be removed when using sanding backing pads.
CAUTION: Proper guard must be reinstalled for grinding wheel,
cutting wheels, sanding flap disc, wire brush or wire wheel applica-
tions after sanding applications are complete.
1. Place or appropriately thread backing pad (P) on the spindle.
2. Place the sanding disc (Q) on the backing pad (P).
3. While depressing spindle lock, thread
clamp nut (R) 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
5˚ - 10˚
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
19
Q
R
P
16 - 30 grit
36 - 80 grit
100 - 120 grit
150 - 180 grit