Bosch 4212L Operating/Safety Instructions Manual page 30

Saw Operations
Crown Molding Laying Flat on Table
Notes: Position workpiece with its back flat on the
saw table.
Always place top edge of molding against fence
(Decorative edge is at the bottom of crown molding.)
• "Spring angle" refers to angle between wall and
crown molding.
1. For 90° corner, set the bevel and miter angles
using Charts below. Tighten the miter lock knob
and the bevel lock lever.
2. Position molding on saw table. Clamp workpiece in
place using the clamp.
Use clamping position that does not
WARNING
!
interfere with operation. Before
switching on, lower head assembly to make sure
clamp clears guard and head assembly.
3. Wait until blade comes to a complete stop before
returning head assembly to the raised position
and/or removing workpiece.
NOTE: ALWAYS TAKE A TEST CUT USING
SCRAP TO CONFIRM CORRECT ANGLES.
Miter and Bevel Settings for Standard Crown Molding Cuts
Assumptions: Molding is milled consistently. Corner is exactly 90°.
Molding Spring Angle is 38 degrees
Inside Corner
Left end (A)
Use the left end of the cut
Right end (B)
Use the right end of the cut
Outside Corner
Left end (C)
Use the left end of the cut
Right end (D)
Use the right end of the cut
(When Crown Molding is Lying Flat on Table)
Miter Bevel
(Table) (Tilt)
Setting Setting
(31.6) Right (33.9) Left
(31.6) Left (33.9) Right
(31.6) Left (33.9) Right
(31.6) Right (33.9) Left
30.
(continued)
Workpiece
Clamp
Figure: Crown Molding Laying Flat on Table
Molding Spring Angle is 45 degrees
Inside Corner
Left end (A)
Use the left end of the cut
Right end (B)
Use the right end of the cut
Outside Corner
Left end (C)
Use the left end of the cut
Right end (D)
Use the right end of the cut
33.9° Bevel
Crown
Molding
31.6°
Miter
Miter Bevel
(Table) (Tilt)
Setting Setting
(35.3) Right (30.0) Left
(35.3) Left (30.0) Right
(35.3) Left (30.0) Right
(35.3) Right (30.0) Left