Cutting Operation - Makita LC1230 Instruction Manual

To install the blade, mount the inner flange, saw blade,
outer flange and hex bolt onto the spindle in that order.
Tighten the hex bolt by turning clockwise while pressing
the shaft lock. Return the blade guard and center cover
to the original position. Then tighten the hex bolt clock-
wise to secure the center cover. Lower the handle to
make sure that the blade guard moves properly.
► Fig.11: 1. Carbide-tipped saw blade 2. Hex bolt
3. Spindle 4. Inner flange 5. Outer flange
Securing workpiece
CAUTION:
• Always set the vise nut to the right fully when
securing the workpiece. Failure to do so may
result in insufficient securing of the workpiece.
This could cause the workpiece to be ejected or
cause damage to the blade.
By turning the vise handle counterclockwise and then flip-
ping the vise nut to the left, the vise is released from the
shaft threads and can be moved rapidly in and out. To grip
workpieces, push the vise handle until the vise plate contacts
the workpiece. Flip the vise nut to the right and then turn the
vise handle clockwise to securely retain the workpiece.
► Fig.12: 1. Vise plate 2. Vise nut 3. Vise handle
Long workpieces must be supported by blocks of
non-flammable material on either side so that it will be
level with the base top.
► Fig.13
OPERATION

Cutting operation

CAUTION:
• Never attempt to cut workpieces less than 2 mm
thick except pipe or workpieces which cannot
be secured firmly with the vise. The piece cut off
may be caught by the blade, causing dangerous
scattering of chips and/or damage to the car-
bide-tips. Possible serious injury may result.
• Do not apply excessive pressure on the handle
when cutting. Too much pressure may result in
overload of the motor, decreased cutting efficiency
and/or damage to the carbide-tips or blade itself.
• Too little pressure on the handle may result in
more sparks and premature blade wear.
• Do not touch the blade, workpiece or cutting
chips immediately after operation; they may be
extremely hot and could burn your skin.
• If the blade stops during operation, makes an
odd noise or begins to vibrate, switch off the
tool immediately. Replace cracked or damaged
blade with a new one.
• Do not cut aluminum, wood, plastics, concrete, tiles, etc.
• Always use carbide-tipped saw blades appro-
priate for your job. The use of inappropriate saw
blades may cause a poor cutting performance
and/or present a risk of personal injury.
Hold the handle firmly. Switch on the tool and wait until
the blade attains full speed. Then lower the handle
gently to bring the blade close to the workpiece. When
the blade makes contact, ease into the cut gently at
first, then gradually add pressure as the cutting posi-
tion steadies. Your pressure on the handle should be
adjusted to produce the minimum amount of sparks.
When the cut is completed, switch off the tool and WAIT
UNTIL THE BLADE HAS COME TO A COMPLETE STOP
before returning the handle to the fully elevated position.
If the handle is raised while the blade is still rotating, the
piece cut off may be caught by the blade, causing dan-
gerous scattering of chips. When cutting only part of the
way into a workpiece, raise the handle while the blade is
rotating. Switching off during the cut may cause damage
to the carbide-tips as they contact the workpiece.
Cutting angles
► Fig.14
Secure the workpiece in the vise as shown in the Figure
A and proceed to cut it. The saw blade life will be short-
ened if the workpiece is cut as shown in the Fig B.
CAUTION:
• Do NOT cut the workpiece as shown in the Fig.
C since this may cause it to be ejected from the
vise, possibly resulting in injury.
The saw blade is subjected to greater wear when the
area A in the Fig. B is cut. Place a wooden block up
against the workpiece as shown in the Fig. D so that the
saw blade will enter area A at an angle. This will help to
extend the saw blade life.
The allowable cutting dimensions are reduced when
a wooden block is used. Use a wooden block whose
dimensions are equivalent to the maximum allowable
cutting dimensions minus the dimensions of the work-
piece to be cut. This will further minimize the shortening
of the saw blade life.
Cutting pipes, squares and channels
► Fig.15
The saw blade is subjected to greater wear when the
areas A and B in figure F and figure G are cut. Place
a wooden block up against the workpiece as shown
in figure H and figure I so that the saw blade will enter
areas A and B at an angle. This will help to minimize the
shortening of the saw blade life.
The allowable cutting dimensions are reduced when a
wooden block is used. Use a wooden block whose dimen-
sions are equivalent to the maximum allowable cutting
dimensions minus the dimensions of the workpiece to be cut.
This will further minimize the shortening of the saw blade life.
Cutting rectangles
► Fig.16
Secure the workpiece in the vise as shown in figure J,
and proceed to cut it.
CAUTION:
• Do NOT cut the workpiece as shown in figure
K since this may cause it to be ejected from the
vise, possibly resulting in injury.
9 ENGLISH