Bosch GCU18V-30 Instrucciones De Funcionamiento Y Seguridad página 14

Instructions for creating cut-outs
in drywall for outlets, can lights,
windows, and doors
Do not attempt to use this
tool to make cutouts around
any fixture or opening which has live electrical
wires, or any wall that may have live electrical
wiring behind it. Shut off breakers or remove
fuses to disconnect the circuit. Always hold the
tool by its thermoplastic housing. The bit could
conduct electrical current to the tool, creating an
electrocution hazard for the operator.
After assembling the bit into the tool as de-
scribed earlier, it will be necessary to review
the instructions provided below and make some
practice cut-outs with this tool before attempting
an actual job. The best method is to take some
scrap pieces and nail or screw them in place over
wall studs which have an electrical box or other
feature in place. A few such exercises will give
you the necessary practice to make clean, pro-
fessional cutouts around whatever is behind the
drywall you are installing.
Step 1: Be certain that the box or fixture is firm-
ly mounted and all wires or other obstructions
around the opening are pushed back out of the
way. The 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 proce-
dure discussed will be to make a cut-out around
a standard 2 1/8" x 3 3/4" electrical box.
Step 2: Turn the tool on. While holding the tool firmly with both hands, plunge the bit through
the middle (Figure 10, cut
to the right until you feel and hear the bit touch
the inside edge of the box (Fig. 9).
Step 3: Pull the bit out far enough to slip it over
the edge of the box so it is now against the out-
side of the box (Figure 10, cut
Step 4: While keeping the bit in contact with the
outside of the box move the tool counter clock-
wise while applying light inward and upward
pressure until you feel and hear it come to the
corner. As you round the corner apply light pres-
sure left and downward (Figure 10, cut
2610067307_GCU18V30_202203.indd 14
page heading Operation
). Then guide the bit
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Fig. 9
Fig. 10
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Step 5: While moving slowly and continuously
along the top contour you will feel the bit come
to the next corner. Round the corner and apply
light down and inward pressure until the bottom
corner is reached (Figure 10, cut
Step 6: Move the bit right and upward maintain-
ing light continuous pressure toward the box
(Figure 10, cut ).
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Step 7: Round the right bottom corner and be-
gin moving the bit upward while applying light
pressure left toward the box until you meet ini-
tial upward cut. Press the on/off button to turn
the tool off (Figure 10, cut
NOTE: These step-by-step instructions are gen-
eralized to acquaint you with the cut out tool op-
eration. After some practice, you may develop a
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3/30/22 8:33 AM