DeWalt DCG412 Guide D'utilisation page 22

SURFACE FINISHING WITH SANDING FLAP DISCS (FIG. 13)
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 (FIG. 2, 14)
WARNING: To reduce the risk of serious personal injury,
turn tool off and remove the battery pack before making any
adjustments or removing/installing attachments or accessories.
An accidental start-up can cause injury.
NOTE: Guard may be removed when using sanding backing pads.
WARNING: Proper guard must be reinstalled for grinding wheel,
cutting wheel, sanding flap disc, wire brush or wire wheel applications
after sanding applications are complete.
1. Place or appropriately thread backing pad (Q) on the spindle.
2. Place the sanding disc (R) on the backing pad (Q).
3. While depressing the spindle lock button (C), thread the threaded
clamp nut (S) on spindle, piloting the raised hub on the threaded
clamp nut into the center of the sanding disc and backing pad.
4. Tighten the threaded clamp nut by
hand. Then depress the spindle lock
button while turning the sanding disc
until the sanding disc and threaded
locking flange are snug.
5. To remove the wheel, grasp and turn
the backing pad and sanding disc
FIG. 13
while depressing the spindle lock
button.
5˚–10˚
USING SANDING BACKING PADS
(FIG. 15)
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.
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. Maintain a 5° to 15° angle between
the tool and work surface. The san ding
disc should contact approximately 1"
(25.4 mm) of work surface.
20
FIG. 14
S
Coarse 16–30 grit
Medium 36–80 grit
Fine Finishing 100–120 grit
Very Fine Finishing 150–180 grit
FIG. 15
R
Q
5˚–15˚