DeWalt DWE4557 Surface Finishing with Sanding Flap Discs FIG, Using Sanding Backing Pads FIG

Models: DWE4557

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P
FIG. 12

5.Remove the tool from the work surface before turning the tool off. Allow the wheel to stop rotating before laying the tool 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 breakage and serious personal injury may result.

SURFACE FINISHING WITH SANDING FLAP DISCS (FIG. 11)

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.While depressing the spindle lock button, thread clamp nut (P) 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 disc while depressing the spindle lock button.

USING SANDING BACKING PADS (FIG. 13)

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

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 wheel to stop rotating before laying the tool down.

FIG. 11

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

16–30 grit

Medium

36–80 grit

Fine Finishing

100–120 grit

Very Fine Finishing

150–180 grit

1. Allow the tool to reach full speed before touching tool to the work

surface.

English

MOUNTING SANDING BACKING PADS (FIG. 12) 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

(R) on the spindle.

2.Place the sanding disc (Q) on the backing pad (R).

Q

R

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 sanding disc should contact approximately 1" (25.4 mm) of

 

work surface.

4. Move the tool constantly in a straight line

FIG. 13

to prevent burning and swirling of work

 

 

 

surface. Allowing the tool to rest on the

 

 

 

work surface without moving, or moving

 

 

 

the tool in a circular motion causes

 

5˚–15˚

burning and swirling marks on the work

 

 

 

 

 

 

surface.

 

 

 

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Page 66
Image 66
DeWalt DWE4557 instruction manual Surface Finishing with Sanding Flap Discs FIG, Using Sanding Backing Pads FIG