Mounting and Using Sanding Backing Pads

399080-02 rev 11/15/02 10:13 AM Page 12

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Mounting and Using Sanding

Backing Pads

Sanding pads and sanding discs must be rated above minimum accessory speed as shown on tool. Recommended sanding back- ing pads and sanding discs are available at extra cost from DEWALT service centers and DEWALT dealers.

NOTE: Guard may be removed for sanding applications with backing pads and sanding discs. Sanding flap discs are considered grinding wheels by ANSI standards and require the use of a guard. (See Mounting and Using Depressed Center Grinding Wheels and Sanding Flap Discs).

MOUNTING SANDING BACKING PADS

Turn off and unplug tool before making any adjustments or removing or installing accessories. Before reconnecting the tool, depress and release the trigger switch to ensure that the tool is off.

CAUTION: Proper guard must be re-installed for grinding wheel, sanding flap disc, wire brush, or wire wheel applications after sand- ing applications are complete.

1. Place or appropriately thread rubber backing	N

pad (L) down to soft mount.		M

2. Place the sanding disc (M) on the rubber backing pad (L).

3. While depressing spindle lock, thread clamp nut (N) on spindle, piloting the raised hub on the clamp nut into the center of sanding disc and backing pad.

4. Tighten the clamp nut with the proper
wrench.	L

5. To remove the wheel, reverse the above procedure.

USING SANDING BACKING PADS

Choose the proper grit sandpaper for your application. Sandpaper is 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 coarser 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 work surface.

2.Apply minimum pressure to work surface, allowing tool to oper- ate at high speed.

3.Maintain a 5˚ to 15˚ angle between the tool

	and work surface. The sanding disc should	5˚-15˚
	contact approximately one inch of work sur-	5˚-15˚
	contact approximately one inch of work sur-
	face.

4.Move the tool constantly in a straight line to prevent burning and swirling of work surface. Allowing the tool to rest on the work sur- face without moving, or moving the tool in a circular motion causes burning and swirling marks on the work surface.

5.Remove the tool from the work surface before turning the tool off. Allow the tool to stop rotating before setting it down.