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2. For wood drilling, use twist bits, spade bits, power auger bits or hole saws.
Begin drilling at a very low speed to prevent the bit from slipping off the
starting point and increase the speed as the drill bit bites into the material.
When drilling “through” holes, place a block of wood behind the workpiece to
prevent ragged or splintered edges on the back side of the hole.
3. For metal drilling, use high speed steel twist drill bits. Begin drilling at a very
low speed to prevent the bit from slipping off the starting point. Maintain a
speed and pressure which allows cutting without overheating the bit. Use
light oil on the drill bit to keep it from overheating; the oil will prolong the
life of the bit and increase the drilling action.
4. If the drill stalls, it is usually because it is being overloaded. Release trigger
switch immediately, remove drill bit from work, and determine cause of stalling.
5. Keep the motor running when pulling the bit back out of drilled hole. This
will prevent jamming.
HAMMER DRILLING MODE OPERATION
1. When hammer drilling, use just enough force on the hammer to keep it from
bouncing excessively. Too much force will cause slower drilling speeds,
overheating and a lower drilling rate.
2. Do not exert side pressure on the bit when drilling, as this will cause
clogging of the bit flutes and reduced drilling speed.
3. If the hammer speed starts to drop off when drilling deep holes, pull the bit
partially out of the hole with the tool still running to help clear debris from
the hole.
4. For masonry, use carbide-tipped bit or masonry bits. A smooth, even flow of
dust indicates the proper drilling rate.
WARNING:
Always wear safety goggles or safety glasses with side shields
during power tool operation or when blowing dust. If operation is dusty, also wear
a dust mask.
SCREWDRIVER OPERATION
1. Select the desired speed/torque range to match the planned operation.
2. Attach the desired fastener accessory into the chuck.
3. Make a few practice runs in scrap piece before working.
