Drilling In Metal - Makita HP1640 Instruction Manual

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 excep-
tions 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.
• There is a tremendous force exerted on the tool/
bit at the time of hole break through. 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.
• Always secure small workpieces in a vise or
similar hold-down device.
MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and
unplugged before attempting to perform inspec-
tion or maintenance.
NOTICE:
• Never use gasoline, benzine, thinner, alcohol or the
like. Discoloration, deformation or cracks may result.
To maintain product SAFETY and RELIABILITY, repairs, car-
bon brush inspection and replacement, any other maintenance
or adjustment should be performed by Makita Authorized
Service Centers, always using Makita replacement parts.
OPTIONAL ACCESSORIES
CAUTION:
• These accessories or attachments are recom-
mended for use with your Makita tool specified
in this manual. The use of any other accessories
or attachments might present a risk of injury to
persons. Only use accessory or attachment for
its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita Service Center.
• Tungsten-carbide tipped hammer bit
• Hole saw
• Blow-out bulb
• Safety goggles
• Keyless drill chuck 13
• Chuck key
• Grip assembly
• Depth gauge
• Plastic carrying case
NOTE:
• Some items in the list may be included in the
tool package as standard accessories. They
may differ from country to country.
8 ENGLISH