DeWalt DW716 Guide D'utilisation page 14

angle when mitering to the left, move the arm to align the
appropriate vernier mark with the closest mark on the miter
scale to the right.
CUTTING BASE MOLDING
ALWAYS MAKE A DRY RUN WITHOUT POWER BEFORE
MAKING ANY CUTS.
Straight 90° cuts:
Position the wood against the fence and hold it in place
as shown in Figure 17. Turn on the saw, allow the blade
to reach full speed and lower the arm smoothly through
the cut.
CUTTING BASE MOLDING UP TO 6" (152 MM)
VERTICALLY AGAINST THE FENCE
Position material as shown in Figure 17.
All cuts made with the back of the molding against the fence
and bottom of the molding against the base.
INSIDE CORNER: OUTSIDE CORNER:
Left side Left side
1. Miter left 45 1. Miter right at 45°
2. Save left side of cut 2. Save left side of cut
Right side Right side
1. Miter Right 45° 1. Miter left at 45°
2. Save right side of cut 2. Save right side of cut
Material up to 6" (152 mm) can be cut as described above.
CUTTING CROWN MOLDING
Your miter saw is better suited to the task of cutting
crown molding than any tool made. 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 latch points at
31.62° left and right for cutting crown molding at the proper
angle and bevel stop pawls at 33.9º left and right. There is
also a mark on the bevel scale at 33.9°.
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
EXTREMELY IMPORTANT!
FIG. 17
FIG. 18
FENCE
TABLE
CROWN MOLDING FLAT ON TABLE AND
AGAINST FENCE
FIG. 18A
DW7084
CROWN
BOTTOM SIDE MOLDING
FENCE
OF MOLDING
TOP SIDE
OF MOLDING
TABLE
FENCE
CROWN MOLDING BETWEEN FENCE
AND TABLE
12
INSTRUCTIONS FOR CUTTING CROWN MOLDING
LAYING FLAT AND USING THE COMPOUND
FEATURES:
1. Molding laying with broad back surface down flat on
saw table (Figure 18).
2. The settings below are for All Standard (U.S.) crown
molding with 52° and 38° angles.
BEVEL SETTING TYPE OF CUT
33.9° Left LEFT SIDE, INSIDE CORNER
1. Top of molding against fence
2. Mitre table set right 31.62°
3. Save left end of cut
33.9° Right RIGHT SIDE, INSIDE CORNER
1. Top of molding against fence
2. Miter table set right 31.62°
3. Save right end of cut
33.9° Right LEFT SIDE, OUTSIDE CORNER
1. Top of molding against fence
2. Miter table set at left 31.62°
3. Save left end of cut
33.9° Left RIGHT SIDE, OUTSIDE CORNER
1. Top of molding against fence
2. Mitre table set right 31.62
3. Save right end of cut°
When setting bevel and miter angles for all compound
miters, remember that:
The angles presented for crown moldings are very
precise and difficult to set exactly. Since they can easily
shift slightly and very few rooms have exactly square
corners, all settings should be tested on scrap molding.
PRETESTING WITH SCRAP MATERIAL IS
EXTREMELY IMPORTANT!
ALTERNATIVE METHOD FOR CUTTING CROWN
MOLDING
Place the molding on the table at an angle between the fence
and the saw table, as shown in Figure 18A. Use of the crown
molding fence accessory (DW7084) is highly recommended
because of its degree of accuracy and convenience. The
crown molding fence accessory is available for purchase
from your local dealer.
The advantage to cutting crown molding using this method
is that no bevel cut is required. Minute changes in the miter
angle can be made without affecting the bevel angle. This
way, when corners other than 90° are encountered, the saw
can be quickly and easily adjusted for them. Use the crown
molding fence accessory to maintain the angle at which the
molding will be on the wall.