Bosch 0 602 301 401 Original Instructions Manual page 52

OBJ_BUCH-698-001.book Page 52 Thursday, September 3, 2009 12:19 PM
52 | English
Cutting Metal (see figure L)
For cutting metal, always use a protection
guard for cutting.
When cutting, work with moderate feed, adapt-
ed to the material being cut. Do not exert pres-
sure onto the cutting disc, tilt or oscillate the
machine.
Do not reduce the speed of running down cut-
ting discs by applying sideward pressure.
The machine must always work in an up-grinding
motion. Otherwise, the danger exists of it being
pushed uncontrolled out of the cut.
When cutting profiles and square bar, it is best
to start at the smallest cross section.
Cutting Stone
For cutting stone, always use a cutting
guide with dust extraction protection guard
(accessory).
The machine may be used only for dry cut-
ting/grinding.
For cutting stone, it is best to use a diamond
cutting disc. For safety against jamming, a spe-
cial cutting guide with dust extraction protec-
tion guard (accessory) must be used.
Operate the machine only with dust extraction
and additionally wear a dust protection mask.
The vacuum cleaner must be approved for the
extraction of masonry dust. Bosch provides suit-
able vacuum cleaners.
– Switch on the machine and place the front
part of the cutting guide on the workpiece.
Slide the machine with moderate feed,
adapted to the material to be worked.
For cutting expecially hard material, e. g., con-
crete with high pebble content, the diamond
cutting disc can overheat and become damaged
as a result. This is clearly indicated by circular
sparking, rotating with the diamond cutting
disc.
In this case, interrupt the cutting process and al-
low the diamond cutting disc to cool by running
the machine for a short time at maximum speed
with no load.
3 609 929 B88 | (9/3/09)
Noticeable decreasing work progress and circu-
lar sparking are indications of a diamond cutting
disc that has become dull. Briefly cutting into
abrasive material (e. g. lime-sand brick) can re-
sharpen the disc again.
Information on Structures
Slots in structural walls are subject to the
Standard DIN 1053 Part 1, or country-specific
regulations.
These regulations are to be observed under all
circumstances. Before beginning work, consult
the responsible structural engineer, architect or
the construction supervisor.
Rough Grinding
Never use a cutting disc for roughing.
The best roughing results are achieved when
setting the machine at an angle of 30° to 40°.
Move the machine back and forth with moderate
pressure. In this manner, the workpiece will not
become too hot, does not discolour and no
grooves are formed.
Sanding with Sanding Discs and the Rubber
Sanding Plate
The choice of the suitable sanding paper de-
pends on the material to be worked.
Bosch offers various sanding-paper qualities
that fit the rubber sanding plate. Contact your
specialist shop for advice.
Polishing with the Buffing Disc
When polishing, a polishing agent is applied to
the buffing disc or the material being polished,
and worked into the surface of the material by
means of rotation.
When working in several polishing steps, where
each polishing agent has a finer grain, a sepa-
rate buffing pad must be used for each grain
size.
Thoroughly clean the surface of the material be-
ing worked between each polishing step.
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