Delta UNISAW 36-L352 - Manual (Page 28)

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FIG. 65
FIG. 66
FIG. 67
FIG. 68 FIG. 69
L
N
M
Use pushsticks, hold-downs, jigs,
fixtures or featherboards to help guide and control the
workpiece when the guard cannot be used.
The accessory dado head set throat plate
(L) Fig. 65 must be used in place of the standard throat
plate. Be sure the throat plate is level to the table before
you proceed.
Always check dado blade clearance before
plugging in the saw.
To reduce the risk of injury, be sure to
place the blade guard assembly and standard throat
plate back in position and check adjustments when
the dado cuts are complete. Reinstall blade guard
assembly, anti-kickback assembly and riving knife.
Never use the dado head in a bevel
position.
Dadoing is cutting a rabbet or wide groove into the
workpiece, as shown in Fig. 66. Most dado head sets
are made up of two outside blades and four or five inside
chippers, (Fig. 67). Various combinations of blades and
chippers are used to cut grooves from 1/8" (3.2 mm) to
1" (25.4 mm) for use in shelving, making joints, tenoning,
grooving, etc.
NOTE: The standard outer arbor flange nut assembly (M)
Fig. 65 cannot be used with dado blade sets. A special
nut (N) is included with the Unisaw to be used in dado
applications. Tighten this arbor nut against the dado
blade set. Do not discard the outer arbor flange nut. It
will be needed when reattaching the standard blade
to the arbor.
To arrange a typical dado set:
1. The blades and chippers (DELTA 35-7670 is used
in this example) are heavily swaged and must be
arranged so that the teeth do not hit each other
during rotation. The heavy portion of the chippers
should fall in the gullets of the outside blades
(Fig. 68).
2. The blade and chipper profile is shown in Fig. 69.
Washers, if needed for fine width adjustment, can be
placed anywhere between the outside blades and the
chippers. A 1/4" (6.4 mm) groove is cut by using the
two outside saws alone.
3. Position the teeth of the blade/chipper so that the
raker on one is beside the cutting teeth on the other.
4. Attach the dado head set to the saw arbor using the
arbor nut (N) Fig. 65.
NOTE: If a deep cut is required. Use several successive
passes rather than attempting to make it with one pass.
Maximum dado width on this saw is 1" (25.4 mm). DO
NOT USE WIDER COMBINATIONS.
To reduce the risk of injury, always return
and fasten the riving knife and blade guard assemblies
to the proper operating position for normal through
sawing operations. Also, be sure the standard throat
plate is back in position.
Chippers
Outside
Blade
Outside
Blade