Cutting Crown Molding - DeWalt DW715-XE Instruction Manual

CUTTING BASE MOLDING UP TO 45mm (1.8") THICK BY UP TO
195.6mm (7–11/16") WIDE LAYING FLAT AND USING THE
BEVEL FEATURE
• All cuts made with the saw set at 45° bevel and 0 miter.
• All cuts made with back of molding laying flat on the saw as shown
in Figures 17 and 18.
INSIDE CORNER:
Left side
1. Position molding with top of molding against the fence
2. Save left side of cut
Right side
1. Position molding with bottom of the molding against the fence
2. Save left side of cut
OUTSIDE CORNER:
Left side
1. Position molding with bottom of the molding against the fence
2. Save right side of cut
Right side
1. Position molding with top of molding against the fence
2. Save right side of cut

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 com-
pound 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 degrees. Most, but not all,
crown molding has a top rear angle (the section that fits flat against the
ceiling) of 52 degrees and a bottom rear angle (the part that fits flat
against the wall) of 38 degrees.
Your miter saw has special pre-set miter latch points at 31.62 degrees left
and right for cutting crown molding at the proper angle and bevel stop pawl
at 33.85˚ left. There is also a mark on the bevel scale at 33.85 degrees.
The chart below 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 degrees, you will have to fine tune your settings
anyway.
PRETESTING WITH SCRAP MATERIAL IS
EXTREMELY IMPORTANT!
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 19).
2. The settings below are for All Standard (U.S.) crown molding with
52° and 38° angles.
BEVEL SETTING TYPE OF CUT
LEFT SIDE, INSIDE CORNER:
33.85° 1. Top of molding against fence
2. Miter table set right 31.62°
3. Save left end of cut
RIGHT SIDE, INSIDE CORNER:
33.85° 1. Bottom of molding against fence
2. Miter table set left 31.62°
3. Save left end of cut
FIG. 18
FENCE
TABLE
CROWN MOLDING FLAT ON TABLE AND
AGAINST FENCE
FIG. 19A
BOTTOM SIDE OF
MOLDING
DW 7084 CROWN
MOLDING FENCE
TOP SIDE
OF MOLDING
FENCE
CROWN MOLDING BETWEEN FENCE AND TABLE
11
33.85°
33.85°
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
FIG. 19
table, as shown in Figure 19A. Use of the crown molding fence accesso-
ry (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 degrees
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.
INSTRUCTIONS FOR CUTTING CROWN MOLDING ANGLED BETWEEN
THE FENCE AND BASE OF THE SAW FOR ALL CUTS:
1. Angle the molding so the bottom of the molding (part which goes
against the wall when installed) is against the fence and the top
of the molding is resting on the base of the saw, as shown in
Figure 19A.
2. The angled "flats" on the back of the molding must rest squarely on
the fence and base of the saw.
INSIDE CORNER:
Left side
1. Miter right at 45°
2. Save the right side of cut
Right side
1. Miter left at 45°
2. Save left side of cut
OUTSIDE CORNER:
Left side
1. Miter left at 45°
TABLE
2. Save right side of cut
Right side
1. Miter right at 45°
2. Save left side of cut
LEFT SIDE, OUTSIDE CORNER:
1. Bottom of molding against fence
2. Miter table set left 31.62°
3. Save right end of cut
RIGHT SIDE, OUTSIDE CORNER:
1. Top of molding against fence
2. Miter table set right 31.62°
3. Save right end of cut