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Craftsman 137.21241 User Manual

Page 23

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Fig. BB

Bevel/Miter Settings

Fig. CC

Settings for standard crown molding lying flat

on compound miter saw table

NOTE: The chart below references a

compound cut for crown molding ONLY

WHEN THE ANGLE BETWEEN THE WALLS

EQUALS EXACTLY 90°.

KEY

BEVEL

SETTING

MITER

SETTING

TYPE OF CUT

Inside corner-Left side

IL

33.9°

31.6° Right 1. Position top of molding against

fence.

2. Miter table set at RIGHT 31.6°.
3. LEFT side is finished piece.

Inside corner-Right side

IR

33.9°

31.6° Left 1. Position bottom of molding

against fence.

2. Miter table set at LEFT 31.6°.
3. LEFT side is finished piece.

Outside corner-Left side

OL

33.9°

31.6° Left 1. Position bottom of molding

against fence.

2. Miter table set at LEFT 31.6°.
3. RIGHT side is finished piece.

Outside corner-Right side

OR

33.9°

31.6° Right 1. Position top of molding against

fence.

2. Miter table set at RIGHT 31.6°.
3. RIGHT side is finished piece.

CUTTING BASE MOLDING (FIG. AA)

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 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 cut. Mark cut line directly on the

tape.

3. Splintering typically happens due to wrong

blade application and thinness of the material.

Fig. AA

NOTE: Always perform a dry run cut so you can

determine if the operation being attempted is

possible before power is applied to the saw.

CUTTING CROWN MOLDING (FIG. BB, CC)

Your compound miter saw is suited for the

difficult task of cutting crown molding. To fit

properly, crown molding must be compound-

miterd 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°.

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.

miter at 45

0

, bevel at 0

0

miter at 0

0

, bevel at 45

0

Workpiece

Workpiece

Miter Saw Table

F

e

n

c

e

Outside Cornor

Inside Cornor

F

e

n

c

e

F

e

n

c

e

Miter Saw Table

Miter Saw Table

IL

IR

OL

OR

Workpiece