Dado Cutting - Hitachi C 10RA2 Manual De Instrucciones

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9. Dado Cutting

WARNING:
To prevent an accident or personal injury, always turn off the switch and disconnect the
power plug from the receptacle before mounting or dismounting the dado blade set.
Never attempt to stack dado blades thicker than 1/2" (12.7 mm) thick. Never use the dado set for cut-offs.
Never attempt bevel cuts when dadoing. Never use dado if there is vibration (flutter) or a strange noise.
Never attempt dado in other than wood. Never put hands over the dado blade.
Take every precaution to prevent kickback of the workpiece. Feed workpiece slowly, especially when cutting
deep or wide grooves. When the dado head is hidden from view while cutting, your hands should never be
on top of the workpiece. When using a dado blade, the saw blade guard assembly must be removed since
there is not cut completely through the wood which will allow the spreader to pass through the workpiece.
CAUTION:
Use extreme caution when dado cutting.
Always stop the tool and wait for dado blade to come to a complete stop. Then simply
withdraw the wood. Use a push stick. Use rip fence or miter gauge. Be alert for potential
kickback conditions. Follow the dado blade set manufactures recommendations. When
using a dado blade set, the depth of cut is not indicated by the pointer. To know the depth
cut, you must measure it with a ruler. Be sure to place the saw blade guard assembly back
in its original position and check adjustments when the dado cuts are completed.
A groove cut into the workpiece is called dado. This dado does not extend completely through the workpiece.
The dado can be made in various widths and depths according to the need. A typical use for a dado is to
make the groove for a shelf. A saw blade can be used to make a dado of any width by marking multiple cuts
side by side. However, it is much easier to use a dado blade. The first has to small blades and a series of
chips to the remove scrap between the blades. The second type consists of a small thick blade which is
caused to wobble by its mounting hubs. This saw will accept dado blades of the cutter chip type to 6" (152
mm) in diameter and 1/2" (12.7 mm) in which. Most wobble type blades are too wide fit on the saw blade
spindle safely. A dado blade requires a table insert which has wider opening. This dado insert is available as
an optional accessory (refer to page 10). Purchase the dado blade set separately.
Mounting the dado blade set
Workpiece
Fig. 33
24
Mounting the dado blade set (see Fig. 33), procedures as follows:
q Remove the saw blade guard assembly with the spreader.
w Remove the table insert.
e Dismount the saw blade.
r Mount the dado blade with the teeth pointing down at the
Dado Cutter
t Mount the dado table insert (optional accessory), instead
CAUTION:
front of the table (Using the instructions with the dado
blade set).
of the table insert.
While tightening the set nut (see Fig. 34), be
careful to maintain the even spacing between
the tips of the inside cutters. Rotate the dado
blade one turn by hand to make sure that it does
not contact anything before operation.