DeWALT DWS780 User Manual
WARNING: Always wear proper personal hearing protection that conforms to ANSI
S12.6 (S3.19) during use. Under some conditions and duration of use, noise from this product
may contribute to hearing loss.
may contribute to hearing loss.
WARNING: NEVER MAKE ANY CUT UNLESS THE MATERIAL IS SECURED ON THE TABLE
AND AGAINST THE FENCE.
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other
construction activities contains chemicals known to the State of California to cause cancer, birth
defects or other reproductive harm. Some examples of these chemicals are:
defects or other reproductive harm. Some examples of these chemicals are:
• lead from lead-based paints,
•
•
crystalline silica from bricks and cement and other masonry products, and
• arsenic and chromium from chemically-treated lumber.
Your risk from these exposures varies, depending on how often you do this type of work. To reduce
your exposure to these chemicals: work in a well ventilated area, and work with approved safety
equipment, such as those dust masks that are specially designed to filter out microscopic particles.
• Avoid prolonged contact with dust from power sanding, sawing, grinding, drilling, and
your exposure to these chemicals: work in a well ventilated area, and work with approved safety
equipment, such as those dust masks that are specially designed to filter out microscopic particles.
• Avoid prolonged contact with dust from power sanding, sawing, grinding, drilling, and
other construction activities. Wear protective clothing and wash exposed areas with
soap and water. Allowing dust to get into your mouth, eyes, or lay on the skin may
promote absorption of harmful chemicals.
soap and water. Allowing dust to get into your mouth, eyes, or lay on the skin may
promote absorption of harmful chemicals.
WARNING: Use of this tool can generate and/or disperse dust, which may cause serious and
permanent respiratory or other injury. Always use NIOSH/OSHA approved respiratory protection
appropriate for the dust exposure. Direct particles away from face and body.
appropriate for the dust exposure. Direct particles away from face and body.
For your convenience and safety, the following warning labels are on your miter saw.
ON MOTOR HOUSING:
ON MOTOR HOUSING:
WARNING: FOR YOUR OWN SAFETY, READ INSTRUCTION MANUAL BEFORE
OPERATING MITER SAW.
WHEN SERVICING, USE ONLY IDENTICAL RE PLACE MENT PARTS.
DO NOT EXPOSE TO RAIN OR USE IN DAMP LOCATIONS.
ALWAYS USE PROPER EYE AND RESPIRATORY PROTECTION.
ON MOVING FENCES:
ALWAYS ADJUST FENCE PROPERLY
DO NOT EXPOSE TO RAIN OR USE IN DAMP LOCATIONS.
ALWAYS USE PROPER EYE AND RESPIRATORY PROTECTION.
ON MOVING FENCES:
ALWAYS ADJUST FENCE PROPERLY
BEFORE USE. CLAMP SMALL PIECES
BEFORE CUTTING. SEE MANUAL.
BEFORE CUTTING. SEE MANUAL.
ON GUARD:
DANGER–KEEP AWAY FROM BLADE.
ON UPPER GUARD:
PROPERLY SECURE BRACKET WITH BOTH SCREWS BEFORE USE.
ON TABLE: (2 PLACES)
WARNING: FOR YOUR OWN SAFETY, READ INSTRUCTION
MANUAL BEFORE OPERATING MITER SAW. KEEP HANDS OUT OF
PATH OF SAW BLADE. DO NOT OPERATE SAW WITHOUT GUARDS
IN PLACE. CHECK LOWER GUARD FOR PROPER CLOSING BEFORE
EACH USE. ALWAYS TIGHTEN ADJUSTMENT KNOBS BEFORE USE.
DO NOT PERFORM ANY OPERATION FREEHAND. NEVER REACH IN
BACK OF SAW BLADE. NEVER CROSS ARMS IN FRONT OF BLADE. TURN OFF TOOL
AND WAIT FOR SAW BLADE TO STOP BEFORE MOVING WORKPIECE, CHANGING
SETTINGS OR MOVING HANDS. DISCONNECT POWER BEFORE CHANGING BLADE
OR SERVICING. TO REDUCE THE RISK OF INJURY, RETURN CARRIAGE TO THE
FULL REAR POSITION AFTER EACH CROSSCUT OPERATION. THINK! YOU CAN
PREVENT ACCIDENTS.
PATH OF SAW BLADE. DO NOT OPERATE SAW WITHOUT GUARDS
IN PLACE. CHECK LOWER GUARD FOR PROPER CLOSING BEFORE
EACH USE. ALWAYS TIGHTEN ADJUSTMENT KNOBS BEFORE USE.
DO NOT PERFORM ANY OPERATION FREEHAND. NEVER REACH IN
BACK OF SAW BLADE. NEVER CROSS ARMS IN FRONT OF BLADE. TURN OFF TOOL
AND WAIT FOR SAW BLADE TO STOP BEFORE MOVING WORKPIECE, CHANGING
SETTINGS OR MOVING HANDS. DISCONNECT POWER BEFORE CHANGING BLADE
OR SERVICING. TO REDUCE THE RISK OF INJURY, RETURN CARRIAGE TO THE
FULL REAR POSITION AFTER EACH CROSSCUT OPERATION. THINK! YOU CAN
PREVENT ACCIDENTS.
ON BASE: (2 PLACES)
Electrical Connection
Be sure your power supply agrees with the nameplate marking. 120 volts, AC means that your
saw will operate on alternating current. The switch is susceptible to failure if direct current is used.
A voltage decrease of 10 percent or more will cause a loss of power and overheating. All D
saw will operate on alternating current. The switch is susceptible to failure if direct current is used.
A voltage decrease of 10 percent or more will cause a loss of power and overheating. All D
E
WALT
tools are factory tested. If this tool does not operate, check the power supply.
Accessories
WARNING: Since accessories, other than those offered by D
E
WALT, have not been tested with
this product, use of such accessories with this tool could be hazardous. To reduce the risk of injury,
only D
only D
E
WALT recommended accessories should be used with this product.
Recommended accessories for use with your tool are available for purchase from your local
dealer or authorized service center. If you need assistance in locating any accessory for your tool,
please contact D
dealer or authorized service center. If you need assistance in locating any accessory for your tool,
please contact D
E
WALT Industrial Tool Co., 701 East Joppa Road, Baltimore, MD 21286, call
1-800-4-D
E
WALT (1-800-433-9258) or visit our website: www.dewalt.com.
Optional Accessories (Fig. 1)
The following accessories, designed for your saw, may be helpful. In some cases, other locally
obtained work supports, length stops, clamps, etc., may be more appropriate. Use care in
selecting and using accessories.
Extension Work Support: DW7080
Used to support long overhanging workpieces, the work support is user assembled. Your saw
obtained work supports, length stops, clamps, etc., may be more appropriate. Use care in
selecting and using accessories.
Extension Work Support: DW7080
Used to support long overhanging workpieces, the work support is user assembled. Your saw
base is designed to accept two work supports, one on each side.
Adjustable Length Stop: DW7051
Requires the use of one Extension Work Support (DW7080) (refer to Figure 1). It is used to
Requires the use of one Extension Work Support (DW7080) (refer to Figure 1). It is used to
make repetitive cuts of the same length from 0 to 42" (107 cm).
Clamp: DW7082 (similar model included)
Used for firmly clamping workpiece to the saw table for precision cutting.
Dust Bag: DW7053 (included with some models)
Equipped with a zipper for easy emptying, the dust bag will capture the majority of the sawdust
Used for firmly clamping workpiece to the saw table for precision cutting.
Dust Bag: DW7053 (included with some models)
Equipped with a zipper for easy emptying, the dust bag will capture the majority of the sawdust
produced.
Crown Molding Fence: DW7084
Used for precision cutting of crown molding.
SAW BLADES: ALWAYS USE 12" (305 mm) SAW BLADES WITH EITHER 1" (25.4 mm) OR
5/8" (15.88 mm) ARBOR HOLES. SPEED RATING MUST BE AT LEAST 4800 RPM. Never use
a smaller diameter blade. It will not be guarded properly. Use crosscut blades only! Do not use
blades designed for ripping, combination blades or blades with hook angles in excess of 7°.
Used for precision cutting of crown molding.
SAW BLADES: ALWAYS USE 12" (305 mm) SAW BLADES WITH EITHER 1" (25.4 mm) OR
5/8" (15.88 mm) ARBOR HOLES. SPEED RATING MUST BE AT LEAST 4800 RPM. Never use
a smaller diameter blade. It will not be guarded properly. Use crosscut blades only! Do not use
blades designed for ripping, combination blades or blades with hook angles in excess of 7°.
BLADE DESCRIPTIONS
APPLICATION
DIAMETER
TEETH
Construction Saw Blades (thin kerf with anti-stick rim)
General Purpose
General Purpose
12" (305 mm)
40
Fine Crosscuts
12" (305 mm)
60
Woodworking Saw Blades (provide smooth, clean cuts)
Fine crosscuts
Fine crosscuts
12" (305 mm)
80
Non-ferrous metals
12" (305 mm)
96
NOTE: For cutting non-ferrous metals, use only saw blades with
TCG (Triple Chip Grind) teeth designed for this purpose.
TCG (Triple Chip Grind) teeth designed for this purpose.
Unpacking Your Saw
Check the contents of your miter saw carton to make sure that you have received all parts.
In addition to this instruction manual, the carton should contain:
1 DWS780 miter saw
1 D
In addition to this instruction manual, the carton should contain:
1 DWS780 miter saw
1 D
E
WALT 12" (305 mm) diameter saw blade
In bag:
1
Blade
wrench
1
DW7053
dustbag
1
Material
clamp
Specifications
CAPACITY OF CUT
50º miter left, 60º miter right,
49º bevel left and right
50º miter left, 60º miter right,
49º bevel left and right
ANGLE
MAXIMUM CAPACITY OF CUT
RESULT
0° miter
Height
4.4" (112 mm)
Width
9.1" (231 mm)
Width
13.75" (349 mm)
Height
3.0" (76 mm)
45° miter
Height
4.4" (112 mm)
Width
5.8" (147 mm)
Width
9.6" (244 mm)
Height
3.0" (76 mm)
45º bevel – left
Height
3.1" (79 mm)
Width
11.4" (290 mm)
Width
13.75" (349 mm)
Height
1.7" (43 mm)
45º bevel – right
Height
2.2" (56 mm)
Width
11.4" (290 mm)
Width
13.75" (349 mm)
Height
1.1" (28 mm)
Your saw is capable of cutting baseboard moldings held vertically 0.8" (20 mm) thick by 6.75"
(171 mm) tall on a 45º right or left miter, when using the slide lock lever (Fig. 7).
(171 mm) tall on a 45º right or left miter, when using the slide lock lever (Fig. 7).
FIG. 2
DW7080
LOCKNUTS
END PLATE
FIG. 1
DW7082
DW7084
DW7051
BRACKET
KNOBS
DW7053
C
FIG. 3
A
B
E
D
H
G
F
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I