Bosch GWS12V-30 Operating/Safety Instructions Manual page 16

TILE / CERAMIC CUTTING
With this grinder it is possible to perform
cutting of tile and ceramic materials. When
cutting, work with moderate feed, adapted to
the material being cut.
Always follow precautions for kickback.
Operate the tool with a dust extraction
system and personal dust protection, e.g.
respirator, dust mask, etc. The vacuum used
for this application must be approved for the
application. Bosch sells suitable vacuum
cleaners.
climb out of the material and KICKBACK will
occur.
1. Allow the tool to reach full speed before
touching the tool to the work surface.
2. If plunge cutting:
a. Tilt tool forward with wheel lined up
with the cut line and hold the tool by the
grinder body (Fig. 8).
b. Gradually lower the rear of tool using the
front end of the guard as the hinge
point.
c. With the guard on the surface, proceed
cutting in forward direction to end of
cut.
3. Always maintain contact between the
guard and work piece.
4. Slide the tool forward at a moderate speed
adapted to the material being cut. Always
cut towards the dust extraction port to
maximize dust extraction and reduce
likelihood of kickback (Fig. 9).
5. Apply minimum pressure to the work
surface, allowing the tool to operate at
high speed. Cutting rate is greatest when
the tool operates at high speed.
6. When the cut is completed, remove tool
from work piece before turning off. Allow
wheel to stop rotating before setting tool
down.
When cutting especially hard material, e. g.,
concrete with high pebble content, the dry
diamond wheel can overheat and become
damaged. This is clearly indicated by circular
sparking of the rotating dry diamond wheel.
Operating Instructions
Never pull the
backward since blade will
In this case, interrupt the cutting process and
allow the dry diamond wheel to cool by
running the tool for a short period of time at
the maximum speed with no-load.
Noticeable decreasing work progress and
circular sparking are indications of a dry
diamond wheel that has become dull. Briefly
cutting into abrasive materials (e. g. brick)
can resharpen the wheel.
FIG. 8
tool
FIG. 9
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