Cutting Crown Molding - Craftsman 137.21229 Operator's Manual

CUTTING CROWN MOLDING
(FIG. AA,BB)
NOTE: The chart below references s compound
cut for crown motding ONLY WHEN THE ANGLE
BETWEEN THE WALLS EQUALS EXACTLY 90 °.
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
fiat against the ceiling and wall are at angles that, when
added together equal exactly 90°.
Most crown molding has a top rear angle (the section
that fits fiat against the ceiling) of 52°and a bottom rear
angle (the section that fits fiat against the wall) of 38°.
tn order to accurately cut crown molding for s 90 °
inside or outside corner, lay the molding with its broad
back surface fiat on the saw table.
Bevel/Miter Settings
NOTE: The chart below references s compound
cut for crown molding ONLY WHEN THE ANGLE
BETWEEN THE WALLS EQUALS EXACTLY 90 °.
KEY BEVEL
SETTING
33.9 °
IR 3&9 °
OL 3&9 °
OR J3&9°
Miter I
,SETTING
R1.6 °
ight
31.6 °
Left
31.6 °
Left
R1-6 °
_ght
TYPE OF CUT
inside corner-Left side
L osition top of molding against fence
Miter tame set at RIGHT 31 6<
LEFT side is finished piece
hside corner-Right side
Position bottom of molding against fence
Miter tame set at LEFT 31 6°
3 LEFT side is finished piece
Outside corner-Left side
Position bottom of molding against fence
Miter table set at LEFT 31 6°
3 RIGHT side is firlished piece
Outside corner-Right side
Eli osition top of molding against fence
Miter table set at RIGHT 31 6'
RIGHT sk_e is finished piece
When setting the bevel and miter angles for compound
miters, remember that the settings are interdependent;
changing one changes the other, as well Also keep in
mind that the angles from crown molding are very easy
for these angles to shift slightly, al! settings should be
tested on scrap molding.
Fig. AA
Fig. BB
FI
em
nl
cl
em
Miter Saw Table
Settings for standard crown molding lying fiat on
compound miter saw table
Inside Corner
Outside Corner
Compound Cut Crown Moldings