DeWalt D28106 Instruction Manual page 10

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
CAUTION: Wheels used for cutting and edge grinding may break 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 13 mm (1/2") 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 the chart on page 7 for more information.
Type 1 guards are available at extra cost from your local dealer or authorized
service center.
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.
WARNING: Do not use edge grinding/cutting wheels for surface grinding applica-
tions because these wheels are not designed for side pressures encountered with sur-
face 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. 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
CAUTION: Turn off and unplug the tool before making any adjustments or
removing or installing attachments or accessories. Before reconnecting the tool,
turn the switch on and off as previously described to ensure that the tool is off.
CAUTION: Proper guard must be reinstalled for grinding 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.
3. While depressing spindle lock, thread clamp
nut (H) on spindle, piloting the raised hub on
the clamp nut into the center of sanding 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 sandpaper for your application. Sandpaper is available in vari-
ous 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.
9
5˚-10˚
R
H
Q