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USE OF THE DADO
HEAD
The dado saw (or head) is a special set of blades for cutting
grooves and dados. The Craftsman 8-inch Kromedge Dado
Set may be purchased at any Sears Retail Store or Catalog
Order
House. The complete
head consists of two outside
blades
1/8-inch
thick, six chipper
blades
1/8-inch
thick
and paper washers for 1/16-inch
width adjustments. With
these blades, grooves may be made in widths of 1/8-inch,
1/4-inch,
and
additional
widths
in steps increased
by
1/16-inch
each, up to a maximum of 13/16-inch.
Outside
blades may be used alone, but chippers cannot be used
alone. When the maximum 13/16-inch
width of dado is
used on the motor shaft, the outside loose collar must not
be used. The width of the dado can be reduced while using
the loose collar and two or more passes may be made with
the work to obtain the desired width of cut. Whenever two
or more chippers are used, the cutting
ends should
be
staggered as evenly as possible around the circumference.
Fractional
adjustments
in thickness of the head can be
made by using paper washers between the outside blades
and chippers.
Dado head operations
are essentially
the same as those
operations
using a standard
saw blade--but
the dado
head takes a bigger bite, therefore, the work-piece should
be held more firmly. When a groove wider than the dado
head is needed, make two or more passes, with cuts spaced
to overlap a trifle. Dado work is performed
in the cross-cut
position. Ploughing
is done in the ripping
position. If the
rip or plough
position is used, the saw guard
and anti-
kickback pawl assembly should be adjusted
as described
in the paragraph
"RIPPING".
Rabbeting
is done with the
motor shaft in a vertical
position. (See figure 35.) When
rabbeting,
the motor is indexed 90 ° to the vertical position
so the blades are between the table top and motor, and
the yoke is indexed 90 ° clockwise and locked. The saw
is moved back on the radial
arm and locked to the arm
when the amount of the blade extending
forward
of the
fence is equal to the depth of the rabbet desired. If the
depth of the rabbet is large, do not attempt to cut it in one
operation.
Lower the radial
arm until blades
are in a
position to cut the desired width of rabbet in the edge of
the board. The discharge elbow should be directed to the
rear of the saw.
MOLDING
OR
SHAPING
This work
is performed
with
Craftsman
Molding
Cutter
Heads, and a set of cutters depending
on the type of mold-
ing cut desired. The saw is positioned in the same manner
as that described for rabbeting.
(See figure 36.) Since the
position of the cutters can be adjusted with respect to the
fence and table top, any or all of the cutter shapes may
be used.
The Molding
Cutter Guard
should be used with Molding
Cutter Head.
REMOVAL
AND
INSTALLATION
OF
MANUAL
BRAKE
ASSEMBLY
Prior to performing
any
operation
that requires
the use of
the motor
shaft opposite
the saw blade
end (routing,
dove-
tailing,
boring,
sanding,
etc.), it will be necessary
to remove
the manual
broke
assembly
to expose
the end of the shaft.
This is accomplished
as follows:
(See figure
37.)
1. Remove the guard assembly,
saw blade
and both cottars.
2. Remove two 1/4-20
x 7!16-inch,
hex-head
screws to free
the brake
housing
from
the motor.
7
Figure 35
BRAKE
BRAKE
_'--_/
DRUM
HOUSING
ASSEMBLY
w
(7/4-20
x 7/16
IN.,
HEX-HD)
MOTOR
Figure 37
I
3. Pull the brake housing off end of motor housing, leaving
the brake shoe and spring in the brake housing.
4. Hold the motor shaft (at saw end) with the shaft wrench
and remove the brake drum from motor shaft with the
arbor wrench. (This end of motor shaft has right-hand
threads.)
5. Install a chuck or other accessory as required,
on end
of motor shaft and tighten it firmly on the threads. The
motor shaft should be held with the shaft wrench at saw
end of shaft while tightening the chuck or other accessory.
6. When
finished
with
the particular
operation
being
per-
formed,
install
the manual
brake
assembly
by reversing
the preceding
removal
procedure.
(See figure
37.)
7. Install saw blade and guard assembly.
15
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