30
OPERATING INSTRUCTIONS
27. Cutting Crown Molding
WARNING
• Always use the work piece clamp, and place tape
on the area being clamped to avoid marks on the
work piece.
Your miter saw is ideal for cutting crown molding.
To t properly, crown molding must be compound-
mitered with extreme accuracy. Since compound
cuts are the most difcult to accurately obtain, trial
cuts should be made in scrap material, and much
thought and planning invested prior to making your
required cut.
28. Cutting Crown Molding Laying on the Miter Table
To t at against the ceiling and the wall, the sum of the angles of the crown molding’s two
connecting surfaces must equal 90°.
When setting the bevel and miter angles for compound miter cuts, remember that the settings
are interdependent; changing one also changes the other.
Keep in mind that, because it is very easy for the angles of crown molding to shift slightly, all
settings should be tested on scrap molding. Also, most walls do not have angles of precisely
90°, therefore, you will need to ne-tune your settings.
When cutting crown molding, the bevel angle should be set at 33.9°, the miter angle should be
set at 31.6°, either left or right, depending on the desired cut for the application.
See the following table for correct angle settings and correct positioning of the crown molding
on the miter table.
Crown molding has a high top rear spring angle (the section that ts at against the ceiling) of
52° and a bottom rear spring angle (the section that ts at against the wall) of 38°
Key Miter Setting Bevel Setting Type of Cut
IL 31.6° Right 33.9° Left
Inside corner-Left side
1. Position top of molding against fence.
2. LEFT side is nished piece
IR 31.6° Left 33.9° Right
Inside corner-Right side
1. Position top of molding against fence.
2. RIGHT side is nished piece
OL 31.6° Left 33.9° Right
Outside corner-Left side
1. Position top of molding against fence.
2. LEFT side is nished piece
OR 31.6° Right 33.9° Left
Outside corner-Right side
1. Position top of molding against fence.
2. RIGHT side is nished piece
27
fence
miter table
38°
52°
wall
celling
IL
IR
OL
OR
inside conner
outside conner
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