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cu'n'ING
CROWN MOLDING (FIG. AA, BB)
Your compound miter saw is suited to 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 900 .
Most crown molding has a top rear angle (the section
that fits flat against the ceiling) of 52 o and a bottom rear
angle (the section that fits flat against the wall) of 38 o.
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. Also keep in
mind that the angles from crown molding are very
precise and difficult to set exactly. Since it is very easy
for these angles to shift slightly, all settings should be
tested on scrap molding.
Fig. AA
FI
el
n I
c I
e I
Miter saw table
J
Workpiece lying flat
Settings for standard crown molding lying flat on
compound miter saw table (Fig. BB)
Fig. BB
I
Insid___
IL_R_OOuts
j(._e comer
Compound cutcrownmoldings
Bevel / Miter Settings
KEY BEVEL
MITER
SETTING SETTING I
IL I 33'90 I 31'6°Right
IR I 33'90 I 31'6°Left
OL I 33'9o I 31'6°Left
OR I 33'90 I 31'6°Right
TYPEOFCUT
Insidecorner - left side
1. Position topofmolding against fence.
2. Miter table setat RIGHT 31.6 °.
3. LEFTsideisfinished p iece.
Insidecorner-Bight side
1. Position bottom ofmolding against fence.
_ Miter table setat LEFT 31.6 °.
i LEFTsideisfinished piece.
Outside corner - Leftside
1. Position bottom ofmolding a gainst fence.
2, Miter table setat LEFT 31.60 .
3. RIGHT sideisfinished p iece,
Outside comer- Bightside
1. Position topofmolding against fence.
2. Miter table setat RIGHT 31.60 .
3. RIGHT side isfinished p iece,
.....
21
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