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9

ADJUSTMENTS

WARNING:

The sander should never be connected to a power
supply when you are assembling parts, making ad-
justments, cleaning, or when not in use. Disconnect-
ing the tool will prevent accidental starting that could
cause serious personal injury.

SELECTING SANDING SLEEVES

Selecting the correct size diameter, correct size grit, and
correct type sanding sleeve is an extremely important
step in achieving a high quality sanded finish.  Aluminum
oxide, silicon carbide, and other synthetic abrasives are
best for power sanding. Natural abrasives, such as flint
and garnet are too soft for power sanding.

In general, when sanding, coarse grit removes the most
material and fine grit produces the best finish. The
condition of the surface to be sanded determines which
grit will do the best job. If the surface is rough, start with
a coarse grit and sand until the surface is uniform. Then
use medium grit to remove scratches left by the coarser
grit. Finally, use finer grit for finishing the surface. Always
continue sanding with each grit until the surface is
uniform.

NOTE: 

Do not use the sander without a sanding sleeve.

Doing so will damage the rubber spindle.

Select and install the desired sanding sleeve for your
particular application.  As mentioned previously, you can
use sanding sleeves from 1/2 in. (12.7 mm) to 3 in.
(76.2 mm) in diameter with this sander. Choose one that
is close in size to the workpiece you are sanding.

Fig. 2

SANDING

SLEEVE

THROAT

PLATE

THROAT

PLATE

OPENING

SELECTING THROAT PLATES/UPPER
SPINDLE WASHERS

See Figure 2.

Six throat plates are provided with this sander. Each
throat plate indicates the correct sanding sleeve/rubber
spindle size to use.

The chart below identifies the relationship between
sanding sleeves/rubber spindles, throat plates, and upper
spindle washers.

WARNING:

Failure to use the correct size throat plate with its
matching sanding sleeve could result in fingers being
pinched or the workpiece being pulled down between
the throat plate and the sanding sleeve.

Sanding Sleeve/Rubber Spindle

Throat Plate

Upper Spindle Washer

1/2 in. (12.7 mm)

.5” (13 mm)

5/8 in. (15.9 mm)

3/4 in. (19.1 mm)

.75” (19 mm)

7/8 in. (22.2 mm)

1 in. (25.4 mm)

1” (26 mm)

7/8 in. (22.2 mm)

1-1/2 in. (38.1 mm)

1.5” (38 mm)

7/8 in. (22.2 mm)

2 in. (50.8 mm)

2” (51 mm)

1-13/16 in. (46 mm)

3 in. (76.2 mm)

3” (76 mm)

1-13/16 in. (46 mm)

Summary of Contents for OSS500

Page 1: ...tor safety Properly cared for it will give you years of rugged trouble free performance WARNING To reduce the risk of injury the user must read and understand the operator s manual Thank you for buyin...

Page 2: ...ses with side shields and a full face shield when needed We recommend Wide Vision Safety Mask for use over eyeglasses or standard safety glasses with side shields Always wear eye protection which is m...

Page 3: ...ed service technician at an autho rized service center Stay constantly aware of cord location and keep it well away from the moving parts of the tool USE OUTDOOR EXTENSION CORDS When tool is used outd...

Page 4: ...WET SANDING Failure to comply can result in electrical shock causing serious injury DO NOT OPERATE THIS TOOL WHILE UNDER THE INFLUENCE OF DRUGS ALCOHOL OR ANY MEDICATION STAY ALERT AND EXERCISE CONTR...

Page 5: ...ctions vital to the operation or maintenance of the equipment SAVE THESE INSTRUCTIONS DOUBLE INSULATION Double insulation is a concept in safety in electric power tools which eliminates the need for t...

Page 6: ...the packing materials from around the tool Lift the tool carefully from the box and place it on a level work surface NOTE The sander is heavy Ask for assistance if necessary Do not discard the packin...

Page 7: ...m tall however you can only sand material up to 3 11 16 in 93 7 mm thick The 1 2 in 12 7 mm sanding sleeve fits directly on the 1 2 in 12 7 mm spindle and requires no rubber spindle It is secured in p...

Page 8: ...nd could result in a hazardous condition leading to possible serious personal injury SPINDLE HEX NUT SANDING SLEEVE 1 in 25 4 mm THROAT PLATE TABLE TOP THROAT PLATE STORAGE AREA WRENCH STORAGE AREA SW...

Page 9: ...face is uniform NOTE Do not use the sander without a sanding sleeve Doing so will damage the rubber spindle Select and install the desired sanding sleeve for your particular application As mentioned p...

Page 10: ...washer down The fins help push dust through the dust exhaust port opening preventing buildup of dust Dust in this area may cause the oscillating motion to stop Always use the lower spindle washer with...

Page 11: ...The fins help push dust through the dust exhaust port opening preventing buildup of dust Dust in this area may cause the oscillating motion to stop Always use the lower spindle washer with all sanding...

Page 12: ...face Place the sander back on the work surface aligning the holes in the base with the holes in the work surface NOTE If the sander does not appear to be stable make sure the rubber stabilizers are in...

Page 13: ...control of the workpiece COLLECTING DUST See Figure 10 A dust exhaust port is provided to help keep dust to a minimum It is located under the table top on the back of the sander The end of a standard...

Page 14: ...r are subject to accelerated wear and possible premature failure as the fiberglass chips and grindings are highly abrasive to bearings brushes commutators etc Consequently we do not recommend that thi...

Page 15: ...15 NOTES...

Page 16: ...VE THE FOLLOWING INFORMATION MODEL NUMBER SERIAL NUMBER OSS500 EXTENSION CORD CAUTION When using a power tool at a considerable distance from a power source be sure to use an extension cord that has t...

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