ENGLISH
8
Useful tips
• When using thehammer only mode, you should apply light pressure to thedrill.
The application of too much pressure can reduce thehammer effect. Try applying
different amounts of pressure until you find themost effective one.
• Check thecondition of thedrill bit/accessory regularly. Replace any worn drill
bits/accessories.
• Let themotor run for afew minutes under no load after hard use to let it cool down.
• For hard metals use titanium coated drill bits and for concrete/tiles use tungsten
carbide tipped bits.
• Fasten theworkpiece down securely if possible. Use clamps or vices when you
can, this will leave you with both hands free to manoeuvre themachine with,
which increases precision.
• If you are drilling into thin materials it is important that you place asmall piece of waste
material behind thehole to be drilled, otherwise there is arisk of burring on theback.
• Hold therotary hammer drill perpendicular to theworkpiece before starting to drill
(look from several angles). Make sure that you keep thedrill straight, do not force
thedrill out of line when drilling.
• Do not apply so much pressure that thedrill reduces speed. Let thedrill bit/chisel
do thework. Reduce pressure before thedrill breaks through thematerial.
• Let thedrill bit continue to rotate once it has broken through thematerial, this
allows themotor to cool down and also clears thedrill bit from debris.
Things to consider when drilling into wood and plastic
• For wood and other soft materials there are several types of accessories such as
hole saws, flat wood bits, etc. Select themost suitable tool for thejob. Test thedrill
on apiece of waste material first.
• Drills can overheat if you don’t pull them up out of thehole often to free them
of sawdust.
• Place asmall piece of waste material behind thehole to be drilled before starting to
drill otherwise there is arisk of burring around theedges of thehole on theback.
Things to consider when drilling into metal
• Mark where thehole is to be drilled using acentre punch.
• The drill bit can overheat if you use too high aspeed. Use acooling fluid suitable
for your workpiece material e.g. methylated spirit for aluminium. (Cast iron and
brass do not require cooling fluid).
• Use alow rpm for big holes.
• If possible, thin or sharp workpieces should be held in avice for safety. Make sure
that they can’t work loose and spin around dangerously when drilled into.
Things to consider when drilling into concrete, tile or brick
• Use Tungsten carbide tipped drill bits.
• Use therotary hammer drill mode and work carefully, applying constant pressure.
• The material residue comes out of thedrilled hole as powder or dust.
Wear aface mask.
• Keep thechisels sharp and correctly ground.
