RIDGID MS1250 Owner's Manual page 22

Basic Saw Operations (continued)
Cutting Base Moldings
Base moldings and many other moldings can be cut on a
miter saw. The set up of the saw depends on your mold-
ing and your application as shown. Always make sure
moldings rest firmly against fence and table.
Cutting Crown Moldings
Your compound miter saw does an excellent job of cutting
crown molding. However, in order to fit properly, crown
molding must be cut with extreme accuracy.
Two Methods of Cutting Crown Molding
Crown molding may either be cut (1) flat on the miter saw
table or (2) angled to the table and fence. (See square
below) Most standard (U.S.) crown molding has a top
rear angle (angle that fits next to the ceiling) of 52° and a
bottom rear angle (angle that fits against wall) of 38°.
Your miter saw has special miter settings at 31.6° left and
right and a bevel setting at 33.9° to use when cutting
crown molding flat on the miter saw table. These settings
are identified with a "CM" mark.
Remember: Even though all of these angles are stan-
dard, rooms are very rarely constructed so the corners
are exactly 90°. You will need to "fine tune" these settings
and make necessary adjustments to the cutting angles.
Cutting Crown Molding Flat on the Miter Saw Table
The advantage of cutting crown molding flat on the table
is that it is easier to secure the molding at the correct cut-
ting position. Also larger pieces of crown molding may be
cut laying flat on the miter saw table.
1. Set the bevel and miter angles using the chart below.
Tighten the miter lock knob and the bevel lock knob.
2. Once again using the chart below correctly positions
the molding.
3. Lower the head assembly, activate the switch and
make the cut. Wait until the blade comes to a complete
stop before allowing the head assembly to return to the
"UP" position and/pr removing the workpiece.
4. ALWAYS PRETEST COMPOUND SETTINGS ON
SCRAP MATERIAL TO CONFIRM CORRECT ANGLES.
F
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Miter Saw Table
Cutting Base Molding
(Miter at 45°, Bevel at 0°)
F
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Miter Saw Table
1. Workpiece Lying Flat
See Chart for Bevel
and Miter Settings
A
B
C
D
22
F
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Miter Saw Table
(Miter at 0°, Bevel at 45°)
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38°
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52°
Miter Saw Table
2. Workpiece Standing
Up-Side Down
(Saw at 0° Bevel/45° Miter)