DeWalt DCS361 Guide D'utilisation page 16

– EXAMPLES –
NUMBER OF SIDES
4
5
6
7
8
9
10
The chart assumes that all sides are of equal length. For a shape that is not shown in the
chart, use the following formula: 180º divided by the number of sides equals the miter (if the
material is cut vertically) or bevel angle (if the material is cut laying flat).
Cutting Compound Miters
(Fig. 17)
A compound miter is a cut made using a miter angle
and a bevel angle 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 17.
NOTE: If the cutting angle varies from cut to cut,
check that the bevel lock knob and the miter lock
handle are securely locked. These must be locked
after making any changes in bevel or miter.
The chart at the end of this manual (Table 1) will assist you in selecting the proper bevel and
miter settings for common compound miter cuts. To use the chart, select the desired angle A
(Fig. 17) 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 miter angle.
Set your saw to the prescribed angles and make a few trial cuts. Practice fitting the cut pieces
together until you develop a feel for this procedure and feel comfortable with it.
Example: To make a 4-sided box with 26º exterior angles (Angle A, Fig. 17), use the upper
right arc. Find 26° on the arc scale. Follow the horizontal intersecting line to either side to
get miter angle setting on saw (42°). Likewise, follow the vertical intersecting line to the top
or bottom to get the bevel angle setting on the saw (18°). Always try cuts on a few scrap
pieces of wood to verify the settings on the saw.
Cutting Base Molding (Fig. 18)
Straight 90º cuts:
Position the wood against the fence and hold it in place as shown in Figure 18. Turn on
the saw, allow the blade to reach full speed and lower the arm smoothly through the cut.
CUTTING BASE MOLDING UP TO 3.5" (89 mm) HIGH VERTICALLY AGAINST THE
FENCE
Position material as shown in Figure 18.
MITER OR BEVEL ANGLE
45°
36°
30°
25.7°
22.5°
20°
18°
FIG. 17
ANGLE "A"
FIG. 18
All cuts should be made with the back of the molding against the fence and with the bottom
of the molding against the table.
INSIDE CORNER
Miter left 45°
Left side
Save left side of cut
Miter right 45°
Right side
Save right side of cut
Material up to 3.5" (89 mm) can be cut as described above.
CUTTING CROWN MOLDING
In order to fit properly, crown molding must be compound mitered with extreme accuracy.
The two flat surfaces on a given piece of crown molding are at angles that, when added
together, equal exactly 90°. Most, but not all, crown molding has a top rear angle (the section
that fits flat against the ceiling) of 52° and a bottom rear angle (the part that fits flat against
the wall) of 38°.
Your miter saw has special pre-set miter detent points at 31.6° left and right for cutting crown
molding at the proper angle. There is also a mark on the bevel scale at 33.8°.
The Bevel Setting/Type of Cut chart gives the proper settings for cutting crown molding.
(The numbers for the miter and bevel settings are very precise and are not easy to accurately
set on your saw.) Since most rooms do not have angles of precisely 90°, you will have to fine
tune your settings anyway.
PRETESTING WITH SCRAP MATERIAL IS EX TREME LY IMPORTANT!
INSTRUCTIONS FOR CUTTING CROWN MOLDING LAYING FLAT AND USING THE
COMPOUND FEATURES
1. Lay the molding with broad back surface down flat on saw table (Fig. 19).
2. The settings below are for all Standard (U.S.) crown molding with 52° and 38° angles.
BEVEL SETTING
33.8°
14
OUTSIDE CORNER
Miter right 45°
Save left side of cut
Miter left 45°
Save right side of cut
TYPE OF CUT
LEFT SIDE, INSIDE CORNER:
1. Top of molding against fence
2. Miter table set right 31.62°
3. Save left end of cut