How To Use The Router - Hitachi FM 8 Handling Instructions Manual

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2. Power switch
Ensure that the power switch is in the OFF position.
If the plug is connected to a receptacle while the
power switch is in the ON position, the power tool
will start operating immediately, which could cause
a serious accident.
3. Extension cord
When the work area is removed from the power
source, use an extension cord of sufficient thickness
and rated capacity. The extension cord should be
kept as short as practicable.
4. Attach the power tool to the holder
Ensure that the power tool is securely fixed to the
holder.
CAUTION
If it is not, it will be very dangerous.
The power tool can be securely fixed by tightening
the holder's knob bolt. (Fig. 1)
5. Installing the handle knob
To install the handle knob, screw it into the holder
fixing hole securely. (Fig. 1)
MOUNTING AND DISMOUNTING BITS
1. Mounting Bits
(1) After fully inserting the bit into the collet chuck
hole, firmly tighten the collet chuck with the acces-
sory wrenches, as shown in Fig. 2.
CAUTION
Ensure that the collet chuck is firmly tightened after
inserting the bit. Failure to do so will result in
damage to the collet chuck.
(2) Use a proper bit which has the same diameter as
the collet.
2. Dismounting Bits
To dismount the bit, follow the mounting proce-
dures in reverse, starting with loosening the collet
chuck with the accessory wrenches.

HOW TO USE THE ROUTER

1. Adjusting the cutting depth
(1) Adjusting the cutting depth with the scale:
1 Loosen the knob to have the scale move freely.
(Fig.3)
2 As shown in Fig. 4 loosen the knob ass'y, push
downward on the handles until the bit lightly contacts
the sruface of the material, and reclamp the knob
ass'y. This preliminary setting is called "cut 0 (zero)".
3 Next, read the scale on the holder.
Pull the scale up to the desired cutting depth, then
tighten the knob (Fig. 5).
For example, if a cutting depth of 10mm is desired
and the "cut 0" reading is as shown in Fig. 5 (a),
raise the stopper pole arrow to the position shown
in Fig. 5 (b).
(2) With the scale set as described above, loosen the
knob ass'y and push downward on the handles until
the scale contacts the base.
The router is now adjusted to the desired cutting
depth.
(3) Nut
It is possible to decrease the clearance between the
bit tip and the material by loosening and moving
downward the nut on the screw.
20
This step provides convenience when moving the
router to align the bit with the cutting place.
(4) When adjusting the cutting depth without using the
scale, force the scale upward to prevent it from
getting in the way.
2. Guiding the Router
There are several ways of guiding the router. Select
the method most convenient for your work require-
ments.
(1) Parallel Guide Ass'y
Use the parallel guide ass'y for chamfering along
the material side or for grooving.
To properly mount the parallel guide ass'y on the
router, first of all, as shown in Fig. 6, attach the
two wing bolts and the two lock springs to the
screw holes on the top side of the base. Insert the
guide bars in the holes on the base and adjust the
distance from the bit to the guide surface.
Tighten the two wing bolts to secure the parallel
guide ass'y.
Feed the router in a manner that the guide surface
of the parallel guide ass'y moves along the material
side.
An auxiliary wood guide can be mounted on the
parallel guide assembly, as shown in Fig. 7, and
fixed in position by utilizing the holes on the guide
surface.
(2) Template Guide
Use the template guide when employing a template
for producing a large quantity of identically shaped
products.
As shown in Fig. 8, secure the template guide to
the base of the router with two accessory screws.
At this time, ensure that the projection side of the
template guide is facing the bottom surface of the
base of the router.
A template is a profiling mold made of plywood
or thin lumber. When making a template, pay par-
ticular attention to the matters described below and
illustrated in Fig. 9.
When using the router along the interior plane of
the template, the dimensions of the finished prod-
uct will be less than the dimensions of the template
by an amount equal to dimension "A", the distance
between the edge of the template and the edge of
the bit. The reverse is true when using the router
along the exterior of the template.
Secure the template to the material. Feed the router
in a manner that the template guide moves along
the template as shown in Fig. 10.
(3) Router Base
Use of the router base as a guide is highly con-
venient when working on material with dimensions
too large for use of the parallel guide assembly.
As shown in Fig.11, secure a straight piece of board
(to be used as a guide) in the appropriate position
on the material, and feed the router in a manner
that the flat side of the router base moves along
the board guide.
Similarly, it is possible to process the material by
guiding the curved side of the router base along
a large dimension template as shown in Fig. 12.
(4) Bits with Pilot
A bit with a pilot is a bit with a rounded shaft with
no cutting edges on its lower portion. Feed the