Operation - Makita DA4000LR Instruction Manual

OPERATION
Drilling operation
*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.
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.
*Drilling in metal
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.
CAUTIO N
:
*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.
*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.
*Always grip the small workpiece firmly with a vise or a holding means.
*A stuck bit can be removed simply by setting the reversing switch to reverse rotation in
order to back out. However, the tool will pull away easily unless you hold it firmly before
starting the tool.
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