Cutting Crown Molding; Cutting Bowed Material - Ryobi EMS2431SCL Owner's Operation Manual

making a finish cut in good material.
To aid in making the correct settings, the
compound angle setting chart is as provided
(Chart 1)

CUTTING CROWN MOLDING

Your compound mitre saw does an excellent job
of cutting crown molding. In general, compound
mitre saws do a better job of cutting crown
molding than any other tool made.
In order to fit properly, crown molding must be
compound mitred with extreme accuracy.
The two contact surfaces on a piece of crown
molding that fit flat against the ceiling and the wall
of a room are at angles that, when added together,
o
equal exactly 90 . Most crown molding has a top
rear angle(the section that fits flat against the
o
ceiling) of 52 and a bottom rear angle(the section
that fits flat against the wall) of 38
LAYING MOLDING FLAT ON THE MITRE TABLE
(Fig. 15)
To use this method for accurately cutting crown
molding for a 90 o
the molding with its broad back surface flat on the
mitre table and against the fence.
When setting the bevel and mitre angles for
compound mitres, remember that the settings are
interdependent; changing one angle changes the
other angle as well.
Keep in mind that the angles for crown molding
are very preclse and difficult to set. Since it is very
easy for these angles to shift, all settings should
first be tested on scrap molding. Also most walls
do not have angles or exactly 90
will need to fine tune your settings.
When cutting crown molding by this method the
bevel angle should be set at 33.85
angle should be set at 31.62
depending on the desired cut for the application.
See the chart. 2 for correct angle settings and
correct positioning of crown molding on mitre
table.
The settings in the chart 2 can be used for cutting
all standard crown molding with 52
angles. The crown molding is placed flat on the
mitre table using the compound features of your
mitre saw.
CHOP CUTTING (WITHOUT SLIDE ACTION)
Slide the saw head to the rear as far as it goes.
Fasten the slide lock knob.
Adjust the mitre angle and/or the bevel angle.
Fasten the mitre knob and the bevel lever securely.
o
.
inside or outside corner, lay
o
, therefore, you
o
. The mitre
o
either right or left,
o
and 38
OPERATION
Switch on the laser (if needed)
Position the workpiece on the table and against
the fence and secure with clamp as appropriate
Squeeze the power trigger and allow the saw to
reach full speed
Press and hold the lower guard release lever
Push the saw handle all the way down
Release the trigger and allow the saw to stop
completely before raising the blade out of the
workpiece.

CUTTING BOWED MATERIAL

Before cutting a workpiece, check and make sure
that it is not bowed. If bowed, it must be positioned
and cut as illustrated (Fig16a &b). Do not position
it incorrectly or try to cut it without the support
of the fence, otherwise it may be pinched on the
blade and could move or jump suddenly and your
hand could hit the blade.
WARNING:
To avoid a kickback and to avoid serious
personal injury, never position the concave edge
of bowed or warped material against the fence.
Bevel
Angle
Setting
o
33.85 Left side, Inside corner
1. Top edge of molding against fence
2. Mitre table set right 31.62
3. Save left end of cut
Right side, Inside corner
o
33.85
1. Bottom edge of molding against fence
2. Mitre table set left 31.62
3. Save left end of cut
33.85 o Left side, outside
1. Bottom edge of molding against fence
2. Mitre table set left 31.62
3. Save right end of cut
o
33.85 o Right side, outside corner
1. Top edge of molding against fence
2. Mitre table set right 31.62
3. Save right end of cut
Chart. 2 Settings for cutting crown holding for a 90
inside or outside corner
Page 13
Type of Cut
o
o
o
o
o