Craftsman 137.322850 Operator's Manual page 40

CUTTING BASE MOLDING (FIG. OO)
Base moldings and many other
moldings can be cut on a compound
miter saw. The setup of the saw
depends on molding characteristics
and application, as shown. Perform
practice cuts on scrap material to
achieve best results:
1. Always make sure moldings rest
firmly against fence and table. Use
hold-down, crown molding vice
or C-clamps, whenever possible,
and place tape on the area being
clamped to avoid marks.
2. Reduce splintering by taping the cut
area prior to making the cut. Mark
the cut line directly on the tape.
3. Splintering typically happens due to
an incorrect blade application and
thinness of the material.
Fig. OO
F
e
Workpiece
n
c
e
Miter saw table
Miter at 45°,
bevel at 0°
CUTTING CROWN MOLDING
(FIG. PP, QQ)
Your compound miter saw is suited
for the difficult task of cutting crown
molding. To fit properly, crown molding
must be compound-mitered with
extreme accuracy. The two surfaces
on a piece of crown molding that fit
flat against the ceiling and wall are at
angles that, when added together,
equal exactly 90°.
F
e
Workpiece
n
c
e
Miter saw table
Miter at 0°,
bevel at 45°
Most crown molding has a top rear
angle (the section that fits flat against
the ceiling) of 52° and a bottom rear
angle (the section that fits flat against
the wall) of 38°.
In order to accurately cut crown molding
for a 90° inside or outside corner, lay the
molding with its broad back surface flat
on the saw table.
When setting the bevel and miter angles
for compound miters, remember that the
settings are interdependent; changing
one changes the other, as well.
Fig. PP
F
e
n
c
e
Fig. QQ
Settings for standard crown molding
lying flat on compound miter saw table
Inside corner
IL
Compound cut crown moldings
40
Workpiece
Miter saw table
OR
OL
IR
Outside corner