DeWalt DW713 Original Instructions Manual page 36

EN G LI S H
WARNING: Always use a material clamp when cutting
non-ferrous metals.
Support for Long Pieces (fi g. 3)
1. Always support long pieces.
2. For best results, use the extension work support (jj) to extend the
table width of your saw (available from your dealer as an option).
Support long workpieces using any convenient means such as
saw-horses or similar devices to keep the ends from dropping.
Cutting Picture Frames, Shadow Boxes and
Other Four-sided Projects (fi g. 26, 27)
TRIM MOULDING AND OTHER FRAMES
Try a few simple projects using scrap wood until you develop a "feel"
for your saw. Your saw is the perfect tool for mitring corners like the one
shown in figure 26. The joint shown has been made using either bevel
adjustment.
USING BEVEL ADJUSTMENT
The bevel for the two boards is adjusted to 45° each, producing a
90° corner. The mitre arm is locked in the zero position. The wood is
positioned with the broad flat side against the table and the narrow
edge against the fence.
USING MITRE ADJUSTMENT
The same cut can be made by mitring right and left with the broad
surface against the fence.
The two sketches (fig. 26, 27) are for four side objects only. As the
number of sides changes, so do the mitre and bevel angles. The chart
below gives the proper angles for a variety of shapes, assuming that all
sides are of equal length. For a shape that is not shown in the chart,
divide 180° by the number of sides to determine the mitre or bevel
angle.
No. of sides
4
5
6
7
8
9
10
Compound Mitre (fi g. 26–29)
A compound mitre is a cut made using a mitre angle (fig. 27) and a
bevel angle (fig. 26) at the same time. This is the type of cut used to
make frames or boxes with slanting sides like the one shown in
figure 28.
WARNING: If the cutting angle varies from cut to cut,
check that the bevel clamp knob and the mitre lock knob
are securely tightened. These knobs must be tightened
after making any changes in bevel or mitre.
• The chart shown below will assist you in selecting the proper bevel
and mitre settings for common compound mitre cuts. To use the
chart, select the desired angle "A" (fig. 29) of your project and
locate that angle on the appropriate arc in the chart. From that
point follow the chart straight down to find the correct bevel angle
and straight across to find the correct mitre angle.
34
Angle mitre or bevel
45°
36°
30°
25.7°
22.5°
20°
18°
0 5 10 15
45
40
35
6 SIDED BOX
30
25
20
15
10
8 SIDED BOX
5
0 5 10 15
SET THIS BEVEL ANGLE ON SAW
• Set your saw to the prescribed angles and make a few trial cuts.
• Practice fitting the cut pieces together.
• Example: To make a 4 sided box with 25° exterior angles (angle
"A") (fig. 29), use the upper right arc. Find 25° on the arc scale.
Follow the horizontal intersecting line to either side to get the
mitre angle setting on the saw (23°). Likewise follow the vertical
intersecting line to the top or bottom to get the bevel angle setting
on the saw (40°). Always try cuts on a few scrap pieces of wood to
verify the settings on the saw.
Vernier Scale (fi g. 30–32)
Your saw is equipped with a vernier scale for added precision. For
settings that require partial degrees (1/4°, 1/2°, 3/4°), the vernier
scale allows you to accurately set mitre angles to the nearest 1/4°
(15 minutes). To use the vernier scale follow the steps listed below. As
an example, assume that the angle you want to mitre is 24-1/4° right.
• Switch off the mitre saw.
• Set the mitre angle to the nearest whole degree desired by aligning
the centre mark in the vernier scale, shown in figure 30, with the
whole degree number etched in the mitre scale. Examine figure. 31
closely; the setting shown is 24° right mitre.
• To set the additional 1/4°, squeeze the mitre arm lock and carefully
move the arm to the right until the 1/4° vernier mark aligns with the
closest degree mark on the mitre scale. In this example, the closest
degree mark on the mitre scale happens to be 25°. Figure 32
shows a setting of 24-1/4° right mitre.
• When mitring to the right:
– increase the mitre angle by moving the arm to align the
appropriate vernier mark with the closest mark on the
mitre scale to the right.
– decrease the mitre angle by moving the arm to align the
appropriate vernier mark with the closest mark on the
mitre scale to the left.
• When mitring to the left:
– increase the mitre angle by moving the arm to align the
appropriate vernier mark with the closest mark on the
mitre scale to the left.
– decrease the mitre angle by moving the arm to align the
appropriate vernier mark with the closest mark on the
mitre scale to the right.
Cutting Base Mouldings
The cutting of base moulding is performed at a 45° bevel angle.
• Always make a dry run without power before making any cuts.
• All cuts are made with the back of the moulding laying flat on the
saw.
20 25 30 35 40 45
SQUARE BOX
40
35
30
25
20
15
10
5
20 25 30 35 40 45