Craftsman 315.212130 - Manual (Page 25)

OPERATION
CUTTING CROWN MOLDING
Your compound miter saw does an excellent job of
cutting crown molding. In general, compound miter
saws do a better job of cutting crown moiding than
any other tooi made.
in order to fit properly, crown molding must be com­
pound mitered with extreme accuracy.
The two contact surfaces on a piece of crown moiding
that fit fiat against the ceiling and the wall of a room
are at angles that, when added together, equal
exactly 90‘. 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 fiat against
the wail) of 38°.
LAYING MOLDING FLAT ON THE
MITER TABLE
See Figure 32.
To use this method for accurately cutting crown
molding for a 90° inside or outside comer, lay the
molding with its broad back surface flat on the miter
table and against the fence.
When setting the bevel and miter angles for com­
pound miters, remember that the settings are interde­
pendent: changing one angle changes the other angle
as well.
Keep in mind that the angles for crown moldings are
very precise and difficult to set. Since it is very easy
for these angies to shift, all settings should first be
tested on scrap molding. Also most walls do not have
angles of exactly 90°, therefore, you will need to fine
tune your settings.
When cutting crown moiding by this method the bevel
angle should be set at 33.85° The miter angle should
be set at 31.62° either right or left, depending on the
desired cut for the application. See the chart below for
correct angle settings and correct positioning of crown
molding on miter table.
The settings in the chart below can be used for cutting
All Standard (U.S.) crown molding with 52° and 38°
angles. The crown molding is placed flat on the miter
table using the compound features of your miter saw.
INSIDE
CORNER
FENCE
OUTSIDE
CORNER
BOnOM EDGE AGAINST FENCE:
• RIGHT SIDE, INSIDE CORNER
• LER SIDE, OUTSIDE CORNER
MITER TABLE
o O
:
------------------- L_
CROWN MOLDING FLAT ON MITER TABLE Fig. 32
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