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Cutting Crown Molding
Crown molding cuts must be positioned prop-
erly to fit exactly.
There are two ways to cut crown molding: flat on
table or angled to table and fence.
See the "Miter and Bevel Settings for Standard
Crown Molding Cuts (When Workpiece Angled
Against Fence)" table below for helpful hints on
cutting crown molding for corners that have 90°
angles.
Crown molding's "spring angle" is the angle be-
tween the back of the molding and the bottom
flat surface that fits against the wall.
This miter saw has special miter detents at
31.6° and bevel detents at 33.9°. These detents
allow you to easily position most crown molding
flat on the table and make precise cuts for 90°
corners.
NOTE: These detents cannot be used with 45°
crown molding. These detents are only for use
with crown molding that has a 38° "spring an-
gle."
Miter and Bevel Settings for Standard Crown Molding Cuts
Any Crown Molding Up To 6" (152mm)
NOTE: Always place
bottom edge against
fence
Inside Corner
Left end (Fig. 46, A)
Use the left end of
the cut
Right end (Fig. 46, B)
Use the right end of
the cut
Outside Corner
Left end (Fig. 46, C)
Use the left end of
the cut
Right end (Fig. 46, D)
Use the right end of
the cut
16099221PK GCM18V-07S OSI 20220506.indd 42
Saw Operations
(When Workpiece Angled Against Fence)
Miter
Bevel
(Table)
(Tilt)
Setting
Setting
45° Right
0° Left
45° Left
0° Right
45° Left
0° Right
45° Right
0° Left
-42-
Also see "Crown Molding Lying Flat on Table"
on page 44 for miter and bevel angles for cut-
ting crown molding that has 38° and 45° spring
angles. The table "Miter and Bevel Settings for
Standard Crown Molding Cuts (When Work-
piece Angled Against Fence)" below lists the ex-
act miter and bevel settings required for a wide
range of corner angles.
Even though these angles are standards, most
rooms do not have angles of exactly 90°; there-
fore, you will need to fine-tune your settings.
The optional Bosch GAM 220 MF and GAM 270
MFL Digital Anglefinder/Protractors measure
spring angles and corner angles, then automati-
cally determine the exact miter and bevel set-
tings necessary to make each crown molding cut
fit perfectly.
Assumptions: Molding is milled consis-
tently. Corner is 90°. For other corner
angles, divide actual measurement by 2.
Fig. 46
Inside
Corner
Fence
Table
Outside
Corner
Top of
molding
against
fence
5/6/22 11:27 AM
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