Makita DA4030 Instruction Manual page 10

Operation
CAUTION:
*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.
*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.
aPressing 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.
*Always secure small workpiece in a vise or similar holddown device
*Avoid drilling in material that you suspect contains hidden nails or other things that may
cause the bit to bind
or
break.
*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.
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
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