DeWalt DW400 Edge Grinding With Grinding Wheels, Surface Finishing With Sanding Flap Discs

EDGE GRINDING WITH GRINDING WHEELS

WARNING: Edge grinding and cutting can be performed only with Type 27 wheels that are designed and specified for this purpose.

WARNING: Wheels used for cutting and edge grinding may break or kick back 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 1/2" in depth). The open side of the guard must be positioned away from the operator.

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-under- side of the wheel is facing away from you.

4. Once a cut is begun and a notch is

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	5˚-10˚
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 acces- sories. Before reconnecting the tool, actuate and release switch to ensure that the tool is off.

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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.

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 breakage and injury may result.

CAUTION: The proper guard must be re- installed for the grinding wheel, sanding flap disc, wire brush or wire wheel applications after sanding applications are complete.

1.Push the hub of the disc nut (M) through the center of the sanding disc (L), as far as it will go, and also through the backing disc (K).

2.Assemble the disc nut hub (J), backing pad, sanding disc, and disc nut as shown.

3.Be sure the disc nut extends through the discs into the disc nut hub.

J

K

L M

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