DeWalt DWS780LST Manual

17
ENGLISH
Set this miter angle on saw
Angle of side of box (angle ”A”)
Set this bevel angle on saw
Example: To make a 4-sided box with 26° exterior angles (Angle A, Fig.S),
use the upper right arc. Find 26° on the arc scale. Follow the horizontal
intersecting line to either side to get mitre angle setting on saw (42°).
Likewise, follow the vertical intersecting line to the top or bottom to get the
bevel angle setting on the saw (18°). Always try cuts on a few scrap pieces
of wood to verify the settings on thesaw.
Cutting Base Moulding (Fig.J,T)
To complete straight 90° cuts, position the wood against the fence and hold
it in place as shown in FigureT. Turn on the saw, allow the blade to reach
full speed and lower the arm smoothly through thecut.
Cutting Base Moulding from 76 mm up to 171 mm High
Vertically Against the Fence (Fig.J, T)
NOTE: Use the slide lock lever
57
, shown in FigureJ, when cutting base
moulding measuring from 76 mm to 171 mm high vertically against
thefence.
Position material as shown in FigureT.
All cuts should be made with the back of the moulding against the fence
and with the bottom of the moulding against thetable.
Inside Corner Outside Corner
Left side Mitre left 45°
Save left side of cut
Mitre right 45°
Save left side of cut
Right side Mitre right 45°
Save right side of cut
Mitre left 45°
Save right side of cut
Material up to 171 mm can be cut as described above.
Cutting Crown Moulding (Fig. A1, U1, U2)
Your mitre saw is well suited to the task of cutting crown moulding. In
order to fit properly, crown moulding must be compound mitred with
extremeaccuracy.
Your mitre saw has special pre-set mitre latch points at 31.62° left and right
for cutting crown moulding at the proper angle and bevel stop pawls at
33.86° left and right. There is also a mark on the bevel scale
8
at 33.9°. The
chart below gives the proper settings for cutting crownmoulding.
NOTE: Pretesting with scrap material is extremely important!
Instructions for Cutting Crown Moulding Laying Flat and
Using the Compound Features (Fig. U1)
1. Moulding should lay flat with the broad back surface down on the
sawtable
15
.
2. Place the top of the moulding against the fence
11
.
3. The settings below are for 45° sprung crownmoulding.
7 SIDED BOX
5 SIDED BOX
SQUARE BOX
Inside Corner Outside Corner
Left side Bevel left 30°
Mitre table set at right 35.26°
Save left end of cut
Bevel right 30°
Mitre table set at left 35.26°
Save left end of cut
Right side Bevel right 30°
Mitre table set at left 35.26°
Save right end of cut
Bevel left 30°
Mitre table set at right 35.26°
Save right end of cut
4. The settings below are for crown moulding with 52° angles at the top
and 38° angles at thebottom.
Inside Corner Outside Corner
Left side Bevel left 33.9°
Mitre table set at right 31.62°
Save left end of cut
Bevel right 33.9°
Mitre table set at left 31.62°
Save left end of cut
Right side Bevel right 33.9°
Mitre table set at left 31.62°
Save right end of cut
Bevel left 33.9°
Mitre table set at right 31.62°
Save right end of cut
Alternative Method for Cutting Crown Moulding
Cutting crown moulding using this method does not require a bevel cut.
Minute changes in the mitre angle can be made without affecting the
bevel angle. When corners other than 90° are encountered, the saw can be
quickly and easily adjusted forthem.
Instructions for Cutting Crown Moulding Angled Between
the Fence and Base of the Saw for All Cuts (Fig. U2)
1. Angle the moulding so the bottom of the moulding (the part which
goes against the wall when installed) is against the fence
11
and the
top of the moulding is resting on the saw table
15
.
2. The angled “flats” on the back of the moulding must rest squarely on
the fence and sawtable.
Inside Corner Outside Corner
Left side Mitre right at 45°
Save right side of cut
Mitre left at 45°
Save right side of cut
Right side Mitre left at 45°
Save left side of cut
Mitre right at 45°
Save left side of cut
Special Cuts

WARNING: Never make any cut unless the material is secured
on the table and against thefence.
Aluminum Cutting (Fig. V1, V2)
ALWAYS USE THE APPROPRIATE SAW BLADE MADE ESPECIALLY FOR
CUTTINGALUMINUM.
Certain workpieces 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V1. FigureV2 illustrates the
wrong way to cut theseextrusions.
Use a stick wax cutting lubricant when cutting aluminum. Apply the stick
wax directly to the saw blade
42
before cutting. Never apply stick wax to
a moving blade. The wax provides proper lubrication and keeps chips from
adhering to theblade.
Bowed Material (Fig. W1, W2)
When cutting bowed material always position it as shown in FigureW1 and
never like that shown in FigureW2. Positioning the material incorrectly will
cause it to pinch theblade.
Cutting Plastic Pipe or Other Round Material
Plastic pipe can be easily cut with your saw. It should be cut just like
wood and CLAMPED OR HELD FIRMLY TO THE FENCE TO KEEP IT FROM
ROLLING. This is extremely important when making anglecuts.
Cutting Large Material (Fig.X)
Occasionally you will encounter a piece of wood a little too large to fit
beneath the lower guard. If this occurs, place your right thumb on the

DeWalt DWS780LST Specifications

General

Brand	DeWalt
Model	DWS780LST
Category	Saw
Language	English