DeWalt DHS790 - Page 16

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ENGLISH
Fig. CC
All cuts should be made with the back of the molding against the fence and with the bottom of
the molding against thetable.
INSIDE CORNER OUTSIDE CORNER
Left side
Miter left 45°
Save left side of cut
Miter right 45°
Save left side of cut
Right side
Miter right 45°
Save right side of cut
Miter left 45°
Save right side of cut
Material up to 6.75" (171 mm) can be cut as describedabove.
Cutting Crown Molding
Your miter saw is well suited to the task of cutting crown molding. In order to fit properly, crown
molding must be compound mitered with extremeaccuracy.
The two flat surfaces on a given piece of crown molding are at angles that, when added together,
equal exactly 90º. Most, but not all, crown molding has a top rear angle (the section that fits flat
against the ceiling) of 52º and a bottom rear angle (the part that fits flat against the wall) of38º.
Your miter saw has special pre-set miter latch points at 31.62º left and right for cutting crown
molding at the proper angle and bevel stop pawls at 33.9º left and right. There is also a mark on
the bevel scale at 33.9º.
The chart below gives the proper settings for cutting crown molding. (The numbers for the miter
and bevel settings are very precise and are not easy to accurately set on your saw.) Since most
rooms do not have angles of precisely 90º, you will have to fine tune your settingsanyway.
PRETESTING WITH SCRAP MATERIAL IS EXTREMELY IMPORTANT!
Instructions for Cutting Crown Molding Laying Flat and Using
the Compound Features (Fig. DD)
1. Molding should lay flat with broad back surface down on sawtable.
2. Top of molding againstfence.
3. The settings below are for all standard (U.S.) crown molding with 52° and 38°angles.
INSIDE CORNER OUTSIDE CORNER
Left side
Bevel left 33.9°
Miter table set at right 31.62°
Save left end of cut
Bevel right 33.9°
Miter table set at left 31.62°
Save left end of cut
Right side
Bevel right 33.9°
Miter table set at left 31.62°
Save right end of cut
Bevel left 33.9°
Miter table set at right 31.62°
Save right end of cut
When setting bevel and miter angles for all compound miters, remember that:
The angles presented for crown moldings are very precise and difficult to set exactly. Since they
can easily shift slightly and very few rooms have exactly square corners, all settings should be
tested on scrapmolding.
Fig. DD
Fence
Table
Crown molding flat on table and against fence
PRETESTING WITH SCRAP MATERIAL IS EXTREMELY IMPORTANT!
Alternative Method for Cutting Crown Molding (Fig. EE)
Place the molding on the table at an angle between the fence and the saw table, as shown in
FigureEE. Use of the crown molding fence accessory (DW7084) is highly recommended because
of its degree of accuracy and convenience (Refer to Optional Accessories). The crown molding
fence accessory is available for purchase from your localdealer.
The advantage to cutting crown molding using this method is that no bevel cut is required.
Minute changes in the miter angle can be made without affecting the bevel angle. This way,
when corners other than 90º are encountered, the saw can be quickly and easily adjusted for
them. Use the crown molding fence accessory to maintain the angle at which the molding will
be on thewall.
Instructions for Cutting Crown Molding Angled Between the
Fence and Base of the Saw For All Cuts
1. Angle the molding so the bottom of the molding (part which goes against the wall when
installed) is against the fence and the top of the molding is resting on the saw table, as
shown in FigureEE.
2. The angled “flats” on the back of the molding must rest squarely on the fence and sawtable.
INSIDE CORNER OUTSIDE CORNER
Left side
Miter right at 45°
Save right side of cut
Miter left at 45°
Save right side of cut
Right side
Miter left at 45°
Save left side of cut
Miter right at 45°
Save left side of cut
Crown Molding Between Fence and Table
Table
Fence
Bottom side
of molding
Top side
of molding
Fig. EE
DW7084 Crown
Molding Fence
Special Cuts
NEVER MAKE ANY CUT UNLESS THE MATERIAL IS SECURED ON THE TABLE AND AGAINST
THEFENCE.
Aluminum Cutting (Fig. FF, GG)
ALWAYS USE THE APPROPRIATE SAW BLADE MADE ESPECIALLY FOR CUTTING ALUMINUM. These
are available at your local DeWALT retailer or DeWALT service center. Certain workpieces, due to
their size, shape or surface finish, may require the use of a clamp or fixture to prevent movement
during the cut. Position the material so that you will be cutting the thinnest cross section, as
shown in FigureFF. FigureGG illustrates the wrong way to cut theseextrusions.
Use a stick wax cutting lubricant when cutting aluminum. Apply the stick wax cutting lubricant
directly to the saw blade before cutting. Never apply stick wax to a moving blade. The wax,
available at most hardware stores and industrial mill supply houses, provides proper lubrication
and keeps chips from adhering to theblade.
Be sure to properly secureworkpiece.
Refer to Saw Blades under Optional Accessories for correct sawblade.