Bosch 1639 Instrucciones De Funcionamiento Y Seguridad página 10

BM 2610915206 10/03 10/15/03
•Step 1: Be certain that the box or fixture
which requires a cut-out is firmly mounted
and all wires or other obstructions around
the opening are pushed back out of the way.
The drywall cut-out bit uses the outer edge
of the box or fixture as a guide, so it is
important that there is nothing in the way
which can prevent it from guiding
completely around the opening. For the
purposes of this instruction manual, the
procedure discussed will be to make a cut-
out around a standard 2 1/8" x 3 3/4"
electrical box.
•Step 2: Before fastening the drywall sheet,
make a mark close to the center of the
opening in the box on the side of the drywall
facing you. You may then begin to screw or
nail the sheet to the wall, but do not install
fasteners closer than about 15" to the box,
or the sheet will likely bulge and crack
before you cut the opening.
•Step 3: Holding the tool firmly switch the
tool to the "ON" position as described
earlier.
•Step 4: Holding the tool firmly with both
hands, push the bit through the drywall at
the mark you made in step 2. Guide the bit
to the right until you feel it make contact
with the inside edge of the box. Then retract
the bit slightly, (do not pull entirely out) to
allow it to penetrate through the drywall and
contact the outside edge of the box by
continuing to move the tool slightly to the
right as you cut.
•Step 5: Keeping the bit in contact with the
outside of the box, move the tool counter-
clockwise to create the opening. When
rounding a corner, keep applying light
pressure towards the center of the box while
moving the bit steadily and smoothly around
the whole box until the entire cut has been
completed. Slide the switch to the "OFF"
position, and pull the bit free of the drywall.
You may then remove the piece you have
cut, and you will have a smooth opening.
The rest of the screws or nails may now be
put in place on the drywall sheet, and the
task is completed.
The motor may stall if
CAUTION
!
improperly used or over-
loaded. Reduce the pressure or feed rate to
prevent possible damage to the tool. Do not
attempt to start the tool when the bit is
engaged in the workpiece. Always be sure
the collet nut is tightened securely before
use.
4:24 PM Page 10
MAKING CUT-OUTS IN MATERIALS
OTHER THAN DRYWALL
Your tool is capable of cutting many types of
building materials in addition to drywall.
There are several different bits available for
use on these materials. Most materials can
be cut with the "wood" bit, however the
"carbide" burr bits must be used for hard,
abrasive materials such as ceramic WALL
tile (will not work on ceramic FLOOR grade
tile), cement board, plaster etc.
To make cut-outs, insert and adjust the
proper bit according
instructions. Hold the tool firmly and turn it
on. Place the depth guide at about a 45º
angle against the work surface figure 9 and
tilt the tool to an upright position with the bit
entering the scrap portion of the area being
cut (Fig. 10).
Move the bit to the line you wish to follow
and cut in a clockwise position. Cutting at a
slow even rate will make following a line
easier and will put less stress on the bit.
NOTE: When cutting on a vertical surface,
avoid ending your cut at the bottom of the
hole. If possible, start and end your cut at
the top so the scrap part will not drop onto
the rotating bit. Turn the tool off and remove
it from the cut out hole.
-10-
to previous
FIG. 9
FIG. 10