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BM 2609932607 07-07
allows for continuous operation at maximum
OPM without holding the trigger.
TO LOCK TRIGGER "ON": squeeze trigger,
depress button and release trigger.
TO UNLOCK THE TRIGGER: squeeze trigger
and release it without depressing the "Lock-
ON" button.
If the "Lock-ON" button is
!
WARNING
continuously being depressed,
the trigger can not be released.
VARIABLE SPEED WITH DIAL SETTING
Your sander is also equipped with a variable
speed dial. The sander's orbital pad speed can
be preset from zero to maximum nameplate
OPM by rotating the dial in the housing. The
dial may be set on or between any of six
positions (1=low through 6=high). The "Lock-
ON" button may also be used with any setting
of the dial.
The following table may be used as a general
guide for abrasive and backing pad selection,
but the best results will be obtained by sanding
a test sample of the workpiece first.
FRONT HANDLE
Depending on the task, you may grip the rear
handle alone, the rear handle and multi-
SANDING: open-coat aluminum oxide
sanding discs are recommended for most
wood or metal sanding applications, as this
synthetic material cuts quickly and wears well.
Some applications, such as plastics, glass, or
stone require silicon carbide discs, which have
a very sharp cutting edge. For best results,
use Bosch sanding and polishing accessories
which are of superior quality and are carefully
selected to produce professional quality results
with your sander.
With the workpiece firmly secured, depress
switch while applying the pad to the work
surface. DO NOT apply excessive pressure
as this will slow the pad action, and DO NOT
start the tool and bring it up to speed before
applying to the work; swirl marks will result in
either case. In general, higher speeds and
moderate pressure will give the best results. If
faster removal is desired, DO NOT INCREASE
PRESSURE ON THE TOOL; use a coarser
7/10/07
8:02 AM
Tool Tips
Page 8
position front handle, or the rear handle and
the top of the motor housing, which is
contoured for that purpose. To adjust the front
handle, loosen wing knob at least two full
turns, position handle and retighten wing knob
firmly.
Switch
Material
setting
rough/finish
woods:
softwoods
4 / 6
hardwoods
4 / 6
veneers
4
metals:
steel
4
stainless
4
aluminum
4/ 6
rust spots
6
paintwork:
sanding
2 / 3
scratches
4 / 6
stripping
4
grade of abrasive. Move the sander in long
sweeping strokes, parallel to the grain using
some lateral motion to overlap the strokes by
as much as 75%. The random orbit action
allows cross-grain sanding, but be careful not
to tilt the sander near edges, or undesirable
rounding may result.
If the surface is rough, begin with coarser grits
and then complete the surfacing with medium
and fine abrasives. Because the random orbit
action is so effective, it is often possible to
begin sanding with a medium grit disc and go
directly to fine finishing. To avoid uneven
results, do not skip more than one grit size
when going from coarser to finer, and do not
sand in one area for too long. When the job is
completed, release switch, and gently lift the
tool from the work surface at the same time.
POLISHING: for most polishing, the soft
backing pad will give the best results. The
random orbit sander may be fitted with a foam
-8-
Backing
Grit
pad
size
rough/finish
extra soft
60 / 240
soft
60 / 180
extra soft
240 / 320
soft
60 / 240
soft
120 / 240
soft
80 / 240
extra soft
60 / 120
soft
180 / 400
hard
120 / 240
soft
40/60 /80
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