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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 90º are encountered, the saw can 

be quickly and easily adjusted for them. 
Use of the DW7084 crown moulding fence accessory (ll) is highly 

recommended because of its degree of accuracy and convenience (fig. 

5).

INSTRUCTIONS FOR CUTTING CROWN MOULDING ANGLED BETWEEN 

THE FENCE AND BASE OF THE SAW FOR ALL CUTS (FIG. 24B)

  1. Angle the moulding so the bottom of the moulding (the part which 

goes against the wall when installed) is against the fence and the top 

of the moulding is resting on the saw table.

  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. 25A, 25B)
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 25A. Figure 25B 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 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. 26A, 26B)

When cutting bowed material always position it as shown in figure 

26A and never like that shown in figure 26B. 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. 1, 27)

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 

upper side of the guard (A) and roll the guard up just enough to clear the 

workpiece, as shown in figure 27. Avoid doing this as much as possible, 

but if need be, the saw will operate properly and make the bigger cut. 

NEVER TIE, TAPE, OR OTHERWISE HOLD THE GUARD OPEN WHEN 

OPERATING THIS SAW.

SPECIAL SET-UP FOR WIDE CROSSCUTS (FIG. 28A, 28B)

Your saw can cut very wide (up to 409 mm [16.1"]) workpieces when 

a special set-up is used. To set the saw up for these workpieces, follow 

these steps:

FIG. 26A

RIGHT

FIG. 26B

WRONG

FIG. 27

FIG. 28A

A9

  1. Remove both left and right sliding fences from the saw and set aside. 

To remove them, unscrew the fence adjustment knobs (M) several 

turns and slide each fence outward. Adjust and lock the mitre control 

so that it is at 0º mitre.

  2. Make a platform using a piece of 38 mm (1.5") thick particleboard 

or similar flat strong 38 mm thick wood to the dimensions: 368 x 

660 mm (14.5" x 26"). The platform must be flat, otherwise the 

material could move during cutting and cause injury.

  3. Mount the 368 x 660 mm (14.5" x 26") platform to the saw using 

four 76.2 mm (3") long wood screws through the holes (A9) in the 

base fence (O) (fig. 28A). Four screws must be used to properly 

secure the material. When the special set-up is used, the platform 

will be cut into two pieces. Ensure the screws are tightened properly, 

otherwise material could loosen and cause injury. Ensure the platform 

is firmly flat on the table, against the fence, and centred evenly from 

left to right.

FIG. 28B

M

O

Summary of Contents for DWS780-XE

Page 1: ...DWS780 XE 305 mm 12 DOUBLE BEVEL SLIDING COMPOUND MITER SAW INSTRUCTION MANUAL ...

Page 2: ......

Page 3: ...sly close to the blade within 6 It is safer than using your hand and it frees both hands to operate tool DON T OVERREACH Keep proper footing and balance at all times Loss of balance may cause personal injury MAINTAIN TOOLS WITH CARE Keep tools sharp and clean for best and safest performance Follow instructions for lubricating and changing accessories Poorly maintained tools and machines can furthe...

Page 4: ...THIS PLATE WHEN DAMAGED Small chip accumulation under the saw may interfere with the saw blade or may cause instability of workpiece when cutting USE ONLY BLADE CLAMPS specified for this tool to prevent damage to the machine and or serious injury CLEAN THE MOTOR AIR SLOTS of chips and sawdust Clogged motor air slots can cause the machine to overheat damaging the machine and possibly causing a shor...

Page 5: ... supply cord If the supply cord is damaged it must be replaced by the manufacturer or an authorised DEWALT Service Centre in order to avoid a hazard Accessories WARNING Since accessories other than those offered by DEWALT have not been tested with this product use of such accessories with this tool could be hazardous To reduce the risk of injury only DEWALT recommended accessories should be used w...

Page 6: ...e width of the saw OO DW7025 Clamp brackets The clamp brackets are used for mounting the saw to a stand SAW BLADES ALWAYS USE 305 mm 12 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...

Page 7: ...screws don t protrude from the bottom of the wood The plywood must sit flush on the work support When clamping the saw to any work surface clamp only on the clamping bosses where the mounting screw holes are located Clamping at any other point will interfere with the proper operation of the saw CAUTION To prevent binding and inaccuracy be sure the mounting surface is not warped or otherwise uneven...

Page 8: ...erate the override bevel the saw slightly to the left 45 BEVEL STOP OVERRIDE FIG 12 There are two bevel stop override levers one on each side of the saw To bevel the saw left or right past 45 push the 45 bevel override lever A1 rearward When in the rearward position the saw can bevel past these stops When the 45 stops are needed pull the 45 bevel override lever forward CROWN BEVEL PAWLS FIG 12 Whe...

Page 9: ...e maximum rotation speed of the tool must not exceed that of the saw blade Do not use any abrasive blades 7 2 Place a square against the saw s fence and blade as shown Do not touch the tips of the blade teeth with the square To do so will cause an inaccurate measurement 3 If the saw blade is not exactly perpendicular to the fence loosen the four screws WW that hold the mitre scale S and move the m...

Page 10: ... table and the fence when cutting Keep hands in position until the trigger has been released and the blade has completely stopped ALWAYS MAKE DRY RUNS UNPOWERED BEFORE FINISH CUTS SO THAT YOU CAN CHECK THE PATH OF THE BLADE DO NOT CROSS HANDS AS SHOWN IN Figure 17B Keep both feet firmly on the floor and maintain proper balance As you move the mitre arm left and right follow it and stand slightly t...

Page 11: ...f the blade during the cut Use the material clamp KK provided with your saw Other aids such as spring clamps bar clamps or C clamps may be appropriate for certain sizes and shapes of material The left or right fence will slide from side to side to aid in clamping TO INSTALL CLAMP 1 Insert it into the hole behind the fence The clamp should be facing toward the back of the mitre saw The groove on th...

Page 12: ... 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 FIG 24A N Q Q N FIG 24B II FIG 25A SS N FIG 25B SS N Set your saw to the prescribed angles and make a few trial cuts Practise fitting the cut pieces together Example To make a 4 sided box with 26º exterior angles Angle A fig 22 use the upper right ar...

Page 13: ...own in figure 26A and never like that shown in figure 26B 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 1 27 Occ...

Page 14: ...s Wear approved eye protection and approved dust mask when performing this procedure WARNING Never use solvents or other harsh chemicals for cleaning the non metallic parts of the tool These chemicals may weaken the materials used in these parts Use a cloth dampened only with water and mild soap Never let any liquid get inside the tool never immerse any part of the tool into a liquid WORKLIGHT CLE...

Page 15: ...COMPOUND MITER CUT POSITION WOOD WITH BROAD FLAT SIDE ON THE TABLE AND THE NARROW EDGE AGAINST THE FENCE SET THIS MITER ANGLE ON SAW ANGLE OF SIDE OF BOX ANGLE A S Q U A R E B O X 6 S I D E D B O X MITER DEGREE SETTING BEVEL DEGREE SETTING SET THIS BEVEL ANGLE ON SAW 8 S I D E D B O X ...

Page 16: ... dewalt com au www dewalt com nz SEP11 Part No N137372 DWS780 XE Copyright 2011 DEWALT The following are trademarks for one or more DEWALT power tools the yellow and black color scheme the D shaped air intake grill the array of pyramids on the handgrip the kit box configuration and the array of lozenge shaped humps on the surface of the tool ...

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