19
Fig 8
ORBITAL MOTION (See Fig. 8)
As shown in Figure 8, the orbit of the sander is 1/16-inch in diameter so the sandpaper
moves in tiny circles at high speed.
This orbital action duplicates a “hand sanding” motion for more aggressive sanding as you
push the sander forward. This powerful orbital action is ideal for heavy-duty sanding
applications, such as:
1.
Removing old finishes
2.
Smoothing rough wood
3.
Sanding stock down to
required dimensions
4.
Finishing surfaces that
are to be painted
1/16-in Orbital
Diameter
OPERATION cont.
WARNING:
DO NOT
wear loose clothing or jewelry when operating sander.
They could get caught in moving parts, causing serious injury. Keep head away from
sander and sanding area. Hair could be drawn into sander, causing serious injury.
!
WARNING:
Empty dust bag before storage to help prevent possible fire
hazard, especially when resin coating or linseed oil finishes have been sanded.
!
NOTE: DO NOT
use the sander without sandpaper. This will damage the cushion.
NOTE: ALWAYS
continue sanding with each grit until the surface is uniform.
NOTE: Empty dust bag frequently when sanding so dust collection system
works properly.
18
OPERATION cont.
SANDING TIPS
1.
DO NOT force the sander.
The weight of the sander supplies adequate pressure on
the workpiece. Let the sander and the sandpaper’s grit do the work.
• Applying additional pressure will only slow down the motor, wear the sandpaper
out faster and reduce the sander’s orbital speed.
• Excessive pressure will overload the motor and cause possible damage to the
sander from the motor overheating.
• Excessive pressure will also result in a poor quality finish.
2. Any existing finish or resin on wood may soften from the heat of the friction and cause
the sandpaper to load-up faster.
3. Inspect sandpaper frequently and change paper when grit is worn and not able to
perform properly.
4.
DO NOT
sand in one spot for too long a time because the sander’s rapid action may
remove too much material and make the surface uneven.
SELECTING THE RIGHT SANDPAPER
1.
Alumi
num oxide, silicon carbide and other synthetic abrasives are best for
power
sanding.
2.
Natural abrasives such as flint and garnet are too soft for economical use in power
sanding.
3.
Coarse grit will remove the most material and finer grit will give you the best finish in all
sanding operations.
4.
The condition of the surface to be sanded will determine which grit will do the job.
5.
If the surface is rough:
A. Start with a coarse grit and sand until the surface is uniform.
B. Then use medium to remove any scratches left by the coarse grit.
C. Then use a finer grit for finishing the surface.
Selecting the correct grit and type of sandpaper is an extremely important
decision that
will allow you to achieve the best quality sanding finish.
USING YOUR SANDER (See Fig. 7)
1.
ALWAYS
clamp and secure the workpiece to prevent it from moving under sander.
2.
ALWAYS
hold your sander in front and away from you, keeping it clear of the workpiece.
3. Start the sander and let the motor build to its maximum speed.
4. Gradually lower the sander onto the workpiece with a slight forward movement.
5. Move the sander slowly, guiding it in a forward and backward motion.
