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NOTE
:
0
Use the proper bit
for
the head
of
the screw that you wish to use.
0
Make sure that the driver bit is inserted straight in the screw head, or the screw and/or
bit may be damaged.
When driving wood screws, predrill pilot
holes
to
make driving easier and
to
pre-
vent splitting
of
the workpiece. See the
chart.
2.5
-
2.8
(3/32"
-
7/64")
3.8 (5/32")
2.9
-
3.2
4.5 (11164")
I
(7/64,,
-
1/8,,)
3.1
-
3.4
(1
18"
-
9/64")
4.8 (3/16')
3.3
-
3.6
5.1 (13/64")
I
(118,,
-9,64,,)
Drilling
operation
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Drilling in wood
When drilling
in
wood, 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.
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Drilling in metal
To
prevent the bit from slipping when starting a hole, make an indentation with a
centerpunch 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
:
0
Pressing excessively on the
tool
will not speed up the drilling. In fact, this excessive pres-
sure will only serve
to
damage the tip
of
your bit, decrease the
tool
performance and
shorten the service life
of
the
tool.
.There is a tremendous force exerted on the tool/bit at the time
of
hole breakthrough.
Hold the
tool
firmly and exert care when the bit begins to break through the workpiece.
0
A stuck bit can be removed simply by setting the reversing switch
to
reverse rotation in
order
to
back
out.
However, the
tool
may back
out
abruptly
if
you do not hold
it
firmly.
0
Always secure small workpieces in a vise
or
similar hold-down device.
10