Concerning Cutting Of Stainless Steel Plates - Hitachi CJ 120V Handling Instructions Manual

6. Adjusting the blade operating speed
This Jig Saw is equipped with the electric control
circuit which enables stepless speed control. To
adjust the speed, turn the dial shown in Fig. 4.
When the dial is set to "1", the jig saw operates
at the minimum speed (850 min
set to "5", the jig saw operates at the maximum
speed (3000 min –1 ). Adjust the speed according to
the material to be cut and working efficiency.
CAUTION:
At low speed (dial setting: 1 or 2) do not cut a wood
with a thickness of more than 10 mm or metal with
a thickness of more than 1 mm.
7. Adjusting the orbital operation
(1) This Jig Saw employs orbital operation which moves
the blade back and forth, as well as up and down.
Set the change knob shown in Fig. 5 to "0" to
eliminate the orbital operation (the blade moves
only up and down). The orbital operation can be
selected in 4 steps from "0" to "III".
(2) For the hard material, such as a steel plate, etc.,
decrease the orbital operation. For the soft material,
such as lumber, plastic, etc., increase the orbital
operation to increase work efficiency. To cut the
material accurately, decrease the orbital operation.
8. Cutting stainless steel plates
This Jig Saw can cut stainless steel plates by using
No. 97 blade. Carefully read "Concerning cutting of
stainless steel plates" for proper operation.
9. Splinter guard
Using the splinter guard when cutting wood
materials will reduce splintering of cut surfaces.
Insert the splinter guard in the space on the base,
and push it completely. (See Fig. 6)
10. Chip cover
Chip cover prevents chips from flying off and
improves the efficiency of dust collector.
Insert the chip cover between the base and lever,
and push with a slight pressure until it catches in
place. (Fig. 7)
When removing chip cover, hold both sides of knob
and slightly open until it can be removed from the
Jig Saw. (Fig. 8)
NOTE:
There is a possibility that chip cover is frosted when
cutting the metal.
11. Sub base
Using the sub base (made from steel) will reduce
abrasion of aluminium base especially in cutting
metals.
Using the sub base (made from resin) will reduce
scratching of cut surface. Attach the sub base to
the bottom surface of base by attached 4 screws.
CUTTING
CAUTION:
In order to prevent blade dislodging, damage or
excessive wear on the Plunger, please make sure
to have surface of the base plate attached to the
work piece while sawing.
1. Rectilinear cutting
When cutting on a straight line, first draw a marking
gauge line and advance the saw along that line.
Using the guide (sold separately) will make it
possible to cut accurately on a straight line.
(1) Loosen the base bolt hexagonal bar wrench attached
(2) Move the base fully forward (Fig. 10), and tighten
(3) Attach the guide by passing it through the
–1
). When the dial
(4) set the orbital position to "0".
NOTE:
2. Sawing curved lines
3. Cutting a circle or a circular arc
NOTE:
4. Cutting metallic materials
(1) Adjust the speed Dial between scales "3" and "4".
(2) Set the orbital position to "0" or "1".
(3) Always use an appropriate cutting fluid (spindle oil.
5. Pocket cutting
(1) In lumber
(2) In other materials
6. Angular cutting
(1) Loosen the base bolt by hexagonal bar wrench
(2) Align the scale (from 0 degrees to 45 degrees by
(3) Tighten the M5 bolt again. (Fig. 9)
(4) Set the orbital position to "0".
NOTE:
CONCERNING CUTTING OF STAINLESS
STEEL PLATES
CAUTION:
on base. (Fig. 9)
the base bolt again.
attachment hole on the base and tighten the M5
bolt. (Fig. 11)
To ensure accurate cutting when using the Guide
(Fig. 11) always set the orbital position to "0"
When sawing a small circular arc, reduce the feeding
speed of the machine. If the machine is fed too fast,
it could cause the blade to break.
The guide also will be helpful for circular cutting.
After attaching the guide by same way noted as
above, drive the nail or screw into the material
through the hole on the guide, then use it for a
axis when cutting. (Fig. 12)
Circular cutting must be done with the blade
approximately vertical to the bottom surface of the
base.
soapy water, etc.). When a liquid cutting fluid is not
available, apply grease to the back surface of the
material to be cut.
Aligning the blade direction with the grain of the
wood, cut step by step until a window hole is cut
in the center of the lumber. (Fig. 13)
When cutting a window hole in materials other than
lumber, initially bore a hole with a drill or similar
tool from which to start cutting.
The base can be swiveled to both sides by up to
45° for angular cutting. (Fig. 14)
attached on base and move the base fully forward.
(Fig. 9, 10)
15-degree increments) of the semi-circular part of
the base with the [ ] mark on the gear cover.
(Fig. 15)
Angular cutting can not be done when adopting
chip cover or dust collector.
In order to prevent blade dislodging, damage or
excessive wear on the Plunger, please make sure to
have surface of the base plate attached to the work
piece while sawing.
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