10
OPERATION

Holding tool

When drilling a large hole with a hole saw, etc., the side grip
(auxiliary handle) should be used as a brace to maintain safe
control of the tool.
Grasp the rear handle and the front grip firmly when starting
or stopping the tool, since there is an initial and final reaction.
When drilling action is forward (clockwise), the tool should be
braced to prevent a counterclockwise reaction if the bit
should bind. When reversing, brace the tool to prevent a
clockwise reaction. If the bit must be removed from a partially
drilled hole, be sure the tool is properly braced before revers-
ing.

Drilling operation

Drilling in wood
When drilling in wood, the best results are obtained with
wood drills equipped with a guide screw. The guide screw
makes drilling easier by pulling the bit into the workpiece.
Drilling in metal
To prevent the bit from slipping when starting a hole, make
an indentation with a center-punch and hammer at the point
to be drilled. Place the point of the bit in the indentation and
start drilling.
Use a cutting lubricant when drilling metals. The exceptions
are iron and brass which should be drilled dry.
CAUTION:
•Pressing excessively on the tool will not speed up the
drilling. In fact, this excessive pressure will only serve to
damage the tip of your bit, decrease the tool
performance and shorten the service life of the tool.
1. Reaction
2. Reverse
3. Forward
1. Forward
2. Reaction
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23
Holding against a stud
003076
1
2
Holding against a floor
003077