Machine Use; Auxiliary Table Board Facing; Using A Table Extension; Cross-Cutting - Delta RS830 Instruction Manual

10" professional radial arm saw
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AUXILIARY
TABLE BOARD FACING
To prevent repeated cutting into the table surface which will eventually cause the table to sag, an auxiliary table board
facing can be cut and fitted to the table. It can be made from 1/4" plywood or particle board and should be cut to a
size that will exactly cover all of the table boards in front of the fence. The auxiliary table board facing should be placed
flat on the table and butted against the table fence. Fasten it to the table with a small brad or finish nail in each corner.
The life of the table boards will be greatly extended by the use of an auxiliary facing.The auxiliary facing can readily be
replaced as often as is necessary to protect the table boards and to insure accurate and safe work.
USING A TABLE EXTENSION
When a table extension more than 24 inches long is attached to the saw, a sturdy outrigger support should be provided
or the stand or bench must be secured to the floor.
I MACHINE USE
I
CROSS-CUTTING
The first operation which should be learned on the radial
saw is cross-cutting
(Fig. 76). Cross-cutting
consists of
supporting the workpiece against the fence and pulling
the saw blade through the material at right angles to it.
When cross-cutting,
the track arm should be indexed at
"0" and the track arm clamp handle tightened. The fence
should be clamped between the table boards. The saw
blade is to be to the left and behind the fence. The
workpiece is placed on the table and butted against the
fence. The saw blade should be clear of the fence and
table when the machine is turned on. Then the saw blade
is lowered until it lightly cuts into the table surface. The
operator should position himself a little to the left of the
machine for better visibility while cutting. Pull the saw
blade across the work, just far enough to cut it off, and
return the saw blade to its starting position. Turn tool off.
and wait for the blade to stop before touching the cut-off
piece.
THE OPERATOR
MUST
ALWAYS BE
CONSCIOUS
OF WHERE
HIS HANDS ARE; THAT
THEY ARE CLEAR OF THE BLADE AND HOLDING
THE WORKPIECE
FIRMLY.
As an added
measure of operator
safety, since the
splitter and anti-kickback
fingers are not used in the
cross-cutting
operation, the anti-kickback
rod can be
turned upside down and locked in place so the rod just
clears the workpiece. In this position the rod can act as
a guard from the exposed teeth of the blade. Fig. 76
shows a cross-cutting
operation
on a radial saw.The
operator should always be sure to return the cutter-head
carriage to the full rear position after each cross-cut
operation.
NOTE: When
cross-cutting
material
more
than
1"
thick,
the
fence
must
be positioned
immediately
behind the fixed front table board.
CROSS-CUT
STOP
A block of wood (B) Fig. 77, clamped to the track arm with
a small clamp will prevent unnecessary
travel of the
cutting-head
on the track arm. This is especially useful
............
when performing repetitive operations. Clamp the block
of wood to the right side of the track arm at a position
which will stop the cutting-head travel as soon as the saw
blade cuts through the workpiece.
MITER CUTTING
Miter
cutting
is similar
to cross-cutting
except
the
workpiece is cut off at an angle (up to 45 degrees right or
left) rather than being cut off square. The settings and
operation are performed in the same manner as cross-
cutting except that the track arm is first positioned to the
Fig. 76
Fig. 77
Fig. 78
desired angle on the miter scale before it is clamped in
place. The operator should position the hand holding the
workpiece
on the opposite side to the direction of the
miter so the blade is pulled through the workpiece and
away from the hand. Fig. 78, shows a typical miter cutting
operation on the radial saw.
28

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