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Idiomas disponibles
Idiomas disponibles
Operating Tips
You will extend
the life of your
bits and do
neater
work
if you
always
put the
bit in
contact
with
the work
before
pulling
the
trigger.
During
the operation,
hold
the tool
firmly and exert light, steady
pressure.
Too
much pressure
at low speed will stall the tool.
Too
little
pressure
will keep
the bit from
cutting
and cause
excess
friction
by sliding
over
the surface.
This can be damaging
to
both tool and bit.
DRILLING
WITH VARIABLE
SPEED
The trigger controlled
variable
speed feature
will eliminate
the need for center
punches
in
hard
materials.
The variable
speed
trigger
allows you to slowly increase
RPM. By using
a slow starting
speed,
you are able to keep
the bit from "wandering".
You can increase
the speed as the bit "bites" into the work by
squeezing
the trigger.
DRIVING
WITH VARIABLE
SPEED
Variable
speed
drills will double
as a power
screwdriver
by using a screwdriver
bit in the
drill mode.
The technique
is to start slowly,
increasing
the speed
as the screw
runs
down. Set the screw
snugly
by slowing
to a
stop.
Prior
to driving
screws,
pilot
and
clearance
holes should be drilled.
FASTENING
WITH SCREWS
This procedure
shown
in (Fig. 10) will enable
you to fasten
materials
together
with your
Cordless
Drill/Screwdriver
without
stripping,
splitting or separating
the material.
First, clamp the pieces together
and drill the
first hole 2/3 the diameter
of the screw. If the
material
is soft,
drill
only
2/3 the proper
length. If it is hard, drill the entire length.
Second,
unclamp
the pieces
and drill the
second
hole the same diameter
as the screw
shank in the first or top piece of wood.
Third, if flat head screw
is used, countersink
the hole
to make
the screw
flush with
the
surface.
Then,
simply
apply
even pressure
when
driving
the screw.
The screw
shank
clearance
hole in the first piece allows
the
screw head to pull the pieces tightly together.
The adjustable
screw drill accessory
will do
all of these
operations
quickly
and easily.
Screw drills are available
for screw sizes No.
6, 8, 10 and 12.
FASTENING
--_
_
2. Drill same
diameteras
WITH SCREWS
screwshank.
1. Drill 2/3 diameter
and
_
_
3. Countersink
2/3 of screw length for _
_
same diameter
soft materials,
full
I
as screw head.
lengthfor hard
materials.
\
t
1
[_
AdJsUStable
Screw
_
Drill
Applya slight
I
"_
I
I
even pressure
f
_
whendriving
........
_
screws.
_
I
ill:
DRILL BITS
Always inspect drill bits for excessive wear. Use
only bits that are sharp and in good condition.
TWIST
BITS:
Available
with
straight
and
reduced
shanks for wood and light duty metal
drilling.
High speed
bits cut faster
and last
longer on hard materials.
CARBIDE
TIPPED
BITS:
Used
for drilling
stone,
concrete,
plaster,
cement
and other
unusually
hard nonmetals.
Use continuous
heavy feed pressure
when employing
carbide
tip bits.
DRILLING
WOOD
Be certain workpiece
is clamped
or anchored
firmly. Always
apply pressure in a straight line
with the drill bit. Maintain
enough
pressure
to
keep the drill "biting".
-15-
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