Cutting Base Molding; Cutting Crown Molding - Bosch 4212L Operating/Safety Instructions Manual

Cutting Base Molding

• Base molding can be cut vertical against fence or
flat on the table. The maximum size that can be ver-
tical on the fence is 4-1/4", flat on table is 8".
LOCATION OF
MOLDING
ON SAW
Molding Piece Being Cut
Inside Miter Angle
corner of wall Bevel Angle
Position of
molding on Saw
Finished
Outside Miter Angle
corner of wall Bevel Angle
Position of
molding on Saw
Finished

Cutting Crown Molding

• Crown molding cuts must be positioned properly to
fit exactly.
• There are two ways to cut crown molding: flat on
table or angled to table and fence.
• Crown molding's "spring angle" is the angle
between 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
moldings flat on the table and make precise cuts
for 90° corners. (These detents are only for use
with crown moldings that have a 38° "spring
BASE MOLDING CUTTING INSTRUCTIONS
Molding in Vertical Position:
Back of molding is
against the fence
To left of corner To right of corner To left of corner To right of corner
Left at 45°
0°
Bottom
against table
Keep left
side side of cut
Right at 45°
0°
Bottom
against table
Keep left
side side of cut
• Follow the table for helpful hints on cutting base
molding for corners that have 90° angles.
Molding in Horizontal Position:
Right at 45°
0°
Bottom Top against
against table
Keep right
side of cut side of cut
Left at 45°
0°
Bottom Top against
against table
Keep right
side of cut side of cut
angle".) NOTE:
used with 45° crown molding.
• See also pages 25 and 26 for miter and bevel angle
charts for cutting crown moldings that have
38° and 45° spring angles (and the material is
laid flat on the miter saw base).
• Even though these angles are standards, most
rooms do not have angles of exactly 90°, therefore,
you will often need to fine tune your settings.
The optional Bosch
Digital Anglefinder/Protractor measures spring
angles and corner angles, then automatically deter-
mines the exact
necessary to make each crown molding cut fit
perfectly.
29.
Back of molding is flat
on the table
0° 0°
45° left 45° right
Top against
fence fence
Keep left Keep right
side of cut
0° 0°
45° right 45° left
Top against
fence fence
Keep left Keep right
side of cut
These detents cannot
DWM40L MiterFinder
miter and bevel settings
be