Black & Decker 3680 User Manual

3680 12" Compound Miter Saw

Instruction Manual

Getting the most out of your tool.

Please take time to read this manual and pay particular attention to the safety rules we’ve provided for your protection. Don’t forget to send in your owner’s registration card. If you have any questions about your tool please call:

1-800-9-BD TOOL

(1-800-923-8665)

OPERATING HANDLE

TRIGGER SWITCH

CARRYING HANDLE

REAR LOWER GUARD

LOCK DOWN PIN

LEFT SIDE FENCE CLAMPING KNOBS

BLADE WRENCH

BENCH MOUNTING HOLES

GUARD

RIGHT SIDE FENCE

MITER CLAMP KNOB

MITER LATCH

MITER SCALE

SPINDLE LOCK BUTTON

BRUSH INSPECTION CAP

MOTOR HOUSING

REAR LOWER GUARD

BEVEL STOP

LEFT SIDE OF FENCE

DUST SPOUT

MITER CLAMP KNOB

BEVEL CLAMP KNOB

BEVEL SCALE

MITER LATCH

MITER SCALE

HAND INDENTATION

Table of Contents

SAFETY INSTRUCTIONS..............................................................................................1

ADDITIONAL SAFETY RULES ......................................................................................2

ELECTRICAL CONNECTION.........................................................................................2

GROUNDING INSTRUCTIONS .....................................................................................2

EXTENSION CORDS.....................................................................................................3

UNPACKING YOUR SAW.............................................................................................3

FAMILIARIZATION.......................................................................................................3

SPECIFICATIONS.........................................................................................................3

BENCH MOUNTING .....................................................................................................3

INSTALLING THE BLADE.............................................................................................4

REAR LOWER GUARD ADJUSTMENT.........................................................................4

CUTTING THE KERF.....................................................................................................4

TRANSPORTING THE SAW .........................................................................................4

ADJUSTMENTS ...........................................................................................................4

MITER SCALE ADJUSTMENT......................................................................................4

MITER POINTER ADJUSTMENT..................................................................................5

BEVEL STOP ADJUSTMENT ........................................................................................5

FENCE ADJUSTMENT ..................................................................................................5

GUARD ACTUATION AND VISIBILITY .........................................................................5

AUTOMATIC ELECTRIC BRAKE ...................................................................................6

SWITCH .......................................................................................................................6

CUTTING WITH YOUR SAW ........................................................................................6

CROSSCUTS................................................................................................................6

BEVEL CUTS ................................................................................................................6

QUALITY OF CUT .........................................................................................................6

BODY AND HAND POSITION .......................................................................................7

CLAMPING THE WORKPIECE......................................................................................7

SUPPORT FOR LONG PIECES .....................................................................................7

CUTTING PICTURE FRAMES, SHADOW BOXES .........................................................7

AND OTHER FOUR SIDED PROJECTS

CUTTING TRIM MOLDING AND OTHER FRAMES .......................................................7

CUTTING COMPOUND MITERS ..............................................................................7

DUAL RANGE MITER SCALE...................................................................................8

VERNIER SCALE .....................................................................................................8

CUTTING BASEBOARD MOLDINGS

CUTTING CROWN MOLDING ......................................................................................10

TROUBLE SHOOTING TIPS MAINTENANCE

ACCESSORIES.............................................................................................................12

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11 12

FOR YOUR SAFETY - ALL TOOLS

WWAARRNNIINNGG:

10.

11.

12.

13.

14.

15.

16.

17.

18.

19.

20.

When using Electric Tools, basic safety precautions should always be followed to reduce

the risk of fire, shock, and personal injury, including the following:

RREEAADD AALLLL IINNSSTTRRUUCCTTIIOONNS KKEEEEPP GGUUAARRDDSS IINN PPLLAACCE RREEMMOOVVEE AADDJJUUSSTTIINNGG KKEEYYSS AANNDD WWRREENNCCHHEESS.

adjusting wrenches are removed from tool before turning it on. KKEEEEPP WWOORRKK AARREEAA CCLLEEAANN. DDOONN’’TT UUSSEE IINN DDAANNGGEERROOUUSS EENNVVIIRROONNMMEENNTT.

expose them to rain. Keep work area well lighted. KKEEEEPP CCHHIILLDDRREENN AAWWAAYY. MMAAKKEE WWOORRKKSSHHOOPP KKIIDD PPRROOOOF DDOONN’’TT FFOORRCCEE TTOOOOLL. UUSSEE RRIIGGHHTT TTOOOOLL.. WWEEAARR PPRROOPPEERR AAPPPPAARREELL..

to get caught in moving parts. Nonslip footwear is recommended. Wear protective hair covering to contain long hair.

AALLWWAAYYSS WWEEAARR SSAAFFEETTYY GGLLAASSSSEESS. Everyday eyeglasses have only impact resistant lenses. They are NOT safety glasses.

SSEECCUURREE WWOORRKK.. and it frees both hands to operate tool.

DDOONN’’TT OOVVEERRRREEAACCHH. MMAAIINNTTAAIINN TTOOOOLLSS WWIITTHH CCAARREE.

Follow instructions for lubricating and changing accessories. DDIISSCCOONNNNEECCTT TTOOOOLLSS

etc. RREEDDUUCCEE TTHHEE RRIISSKK OOFF UUNNIINNTTEENNTTIIOONNAALL SSTTAARRTTIINNGG.

plugging in. UUSSEE RREECCOOMMMMEENNDDEEDD AACCCCEESSSSOORRIIEESS.

sories. The use of improper accessories may cause risk of injury to persons. NNEEVVEERR SSTTAANNDD OONN TTOOOOLL..

unintentionally contacted. CCHHEECCKK DDAAMMAAGGEEDD PPAARRTTSS.

should be carefully checked to determine that it will operate properly and perform its intended function—check for alignment of moving parts, binding of moving parts, breakage of parts, mounting and any other conditions that may affect its operation. A guard or other part that is damaged should be properly repaired or replaced.

NNEEVVEERR LLEEAAVVEE TTOOOOLL RRUUNNNNIINNGG UUNNAATTTTEENNDDEEDD.. TTUURRNN PPOOWWEERR OOFFFF. comes to a complete stop.

DDOO NNOOTT OOPPEERRAATTEE EELLEECCTTRRIICC TTOOOOLLSS NNEEAARR FFLLAAMMMMAABBLLEE LLIIQQUUIIDDSS OORR IINN GGAASSEEOOUUSS OORR EEXXPPLLOOSSIIVVEE AATTMMOOSSPPHHEERREESS.

and in working order.

Cluttered areas and benches invite accidents.

Don’t use power tools in damp or wet locations, or

All visitors should be kept at a safe distance from work area.

with padlocks, master switches, or by removing starter keys.

It will do the job better and be safer at the rate for which it was designed.

Don’t force tool or attachment to do a job for which it was not designed.

No loose clothing, gloves, neckties, rings, bracelets, or other jewelry

Also use face or dust mask if cutting operation is dusty.

Use clamps or vise to hold work when practical. It’s safer than using your hand

Keep proper footing and balance at all times.

Keep tools sharp and clean for best and safest performance.

before servicing; when changing accessories such as blades, bits, cutters,

Consult the instruction manual for recommended acces-

Serious injury could occur if the tool is tipped or if the cutting tool is

Before further use of the tool, a guard or other part that is damaged

Motors in these tools may spark and ignite fumes.

Form habit of checking to see that keys and

Make sure switch is in OFF position before

Don’t leave tool until it

ALWAYS ADJUST FENCE PROPERLY  BEFORE USE. CLAMP SMALL PIECES BEFORE CUTTING. SEE MANUAL.

DANGER

KEEP AWAY

FROM BLADE

CCAAUUTTIIOONN:: FFAAIILLUURREE TTOO HHEEEEDD TTHHEESSEE WWAARRNNIINNGGSS MMAAYY RREESSUULLTT IINN PPEERRSSOONNAALL IINNJJUURRYY AANND

1. SSEERRIIOOUUSS DDAAMMAAGGEE TTOO TTHHEE SSAAWW.

DDO

2. DDO

3. blade are pointing to the rear of the miter saw.

DDO

4. DDO

5. Tighten arbor screw securely.

DDO

6. DDO

7. DDO

8. DDO

9. DDOO-

10. vicing or adjusting tool.

DDO

11. DDOONN’’T

12. DDOONN’’T

13. DDOONN’’T

14. DDOONN’’T

15. DDOONN’’T

16. motor to reach full speed before cutting.)

DDOONN’’T

17. DDOONN’’T

18. damage the saw.

DDOONN’’T

19. DDOONN’’T

20. DDOONN’’T

21. DDOONN’’T

22. DDOONN’’T

23. DDOONN’’T

24. DDOONN’’T

25. DDOONN’’T

26. DDOONN’’T

27. DDOONN’’T

28. exposed on the underside of the saw.

DDOONN’’T

29. DDOONN’’T

30. CCAAUUTTIIOONN:

31. understood.

CCAAUUTTIIOONN:

32. can be toxic. When cutting these materials extra care should be taken to avoid inhalation and minimize skin contact.

SAFETY INSTRUCTIONS - MITER SAWS

-Protect electric supply line with at least a 15 ampere time-delay fuse or a circuit breaker.

-Make certain the blade rotates in the correct direction and that the teeth at the bottom of the

-Be sure all clamp handles are tight before starting any operation.

-Be sure all blade and clamp washers are clean and recessed sides of collars are against blade.

- Keep saw blade sharp and properly set.

-Keep motor air slots free of chips and dirt.

-Use blade guards at all times.

-Keep hands out of path of saw blade.

Shut off power, disconnect cord from power source and wait for saw blade to stop before ser-

-Support long work with an outboard tool rest.

-Attempt to operate on anything but designated voltage.

-Operate unless all clamp handles are tight.

- Use blades larger or smaller than those which are recommended.

- Wedge anything against fan to hold motor shaft.

-Force cutting action. (Stalling or partial stalling of motor can cause major damage. Allow

- Cut ferrous metals (Those with any iron or steel content) or any masonry.

-Use abrasive wheels. The excessive heat and abrasive particles generated by them will

-Allow anyone to stand behind saw.

-Apply lubricants to the blade when it’s running.

-Place either hand in the blade area when the saw is connected to the power source.

-Use blades rated less than 4800 R.P.M.

-Attempt to cut small pieces (6”) without clamping.

-Operate saw without guards in place.

-Perform any operation freehand.

-Reach around or behind saw blade.

-Place hands closer than 6 inches from the saw blade.

- Reach underneath the saw unless it is turned off and unplugged. The saw blade is

- Move either hand from saw or work piece or raise arm until blade has stopped.

- Use without Kerf Plate or when kerf slot is wider than 3/8”.

Do not connect unit to electrical power source until complete instructions are read and

Some wood contains preservatives such as copper chromium arsenate (CCA) which

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OONN MMOOTTOORR HHOOUUSSIINNG

WARNING: FOR YOUR OWN SAFETY, READ INSTRUCTION MANUAL BEFORE OPERATING SAW.

WHEN SERVICING, USE ONLY IDENTICAL REPLACEMENT PARTS. ALWAYS WEAR EYE PROTECTION.

OONN MMOOVVIINNGG FFEENNCCEE::

ALWAYS ADUST FENCE PROPERLY BEFORE

USE. CLAMP SMALL PIECES BEFORE CUTTING. SEE MANUAL.

OONN GGUUAARRDD: DDAANNGGEERR –– KKEEEEPP AAWWAAYY FFRROOMM BBLLAADDEE.

OONN TTAABBLLEE::((22 PPLLAACCEESS)

)

ALWAYS TIGHTEN ADJUSTMENT KNOBS BEFORE USE. KEEP HANDS 6" FROM PATH OF SAW BLADE. NEVER PERFORM ANY OPERATION FREEHAND. NEVER CROSS ARMS IN FRONT OF SAW BLADE. THINK! YOU CAN PREVENT ACCIDENTS.

DO NOT OPERATE SAW WITHOUT GUARDS IN PLACE. NEVER REACH IN BACK OF SAW BLADE. ALWAYS WEAR EYE PROTECTION. SHUT OFF POWER AND WAIT FOR BLADE TO STOP BEFORE SERVICING, ADJUSTING TOOL, OR MOVING HANDS.

SSAAVVEE TTHHEESSEE IINNSSTTRRUUCCTTIIOONNSSFFOORR FFUUTTUURREE UUSSE

Electrical Connection

Be sure your power supply agrees with the nameplate marking. 120 volts, AC/DC means that your saw will operate on alternating or direct current. A voltage decrease of 10 percent or more willcause a loss of power and overheating. All B&D tools are factory

tested. If this tool does not operate, check the power supply.

Grounding

In the event of a malfunction or breakdown, grounding provides a path of least resistance for electric current to reduce the risk of electric shock. This tool is equipped with an electric cord having an equipment-grounding conductor and a grounding plug. The plug must be plugged into a matching outlet that is properly installed and grounded in accordance with all local codes and ordinances. Do not modify the plug provided. If it will not fit the outlet, have the proper outlet installed by a qualified electrician.

This tool is intended for use on a circuit that has an outlet like the one illustrated in sketch A. The tool has a grounding plug that looks like the plug illustrated in sketch A. A temporary adapter, which looks like the adapter illustrated in sketches B and C, may be used to connect this plug to a 2-pole receptacle as shown in

GROUNDED OUTLET BOX

GROUNDING PRONG IS LONGEST OF 3 PRONGS

GROUNDING MEANS

ADAPTER

sketch B if a properly grounded outlet is not available. The temporary adapter should be used only until a properly grounded outlet can be installed by a qualified electrician. The green-colored rigid ear, lug, and the like, extending from the adapter must be connected to a permanent ground such as a properly grounded outlet box.

ADAPTER SHOWN IN FIGURES B & C IS NOT FOR USE IN CANADA.

Extension Cords

Tools that have 3 wire cords requiring grounding must only be used with extension cords that have 3prong grounding type plugs and 3-pole receptacles. Only round jacketed extension cords should be used, and we recommend that they be listed by Underwriters Laboratories (U.L.) (C.S.A. in Canada). If the extension will be used outside, the cord must be suitable for outdoor use. The letters “WA” on the cord jacket indicate that it is suitable for outdoor use. Any cord marked as outdoor can also be used for indoor work.

An extension cord must have adequate wire size (AWG or American Wire Gauge) for safety, and to prevent loss of power and overheating. The smaller the gauge number of the wire, the greater the capacity of the cable, that is 16 gauge has more capacity than 18 gauge. When using more than one extension to make up the total length, be sure each individual extension contains at least the minimum wire size. To determine the minimum wire size required, refer to the following chart:

112200 VVOOLLTT TTOOOOLLS

Cord Length (feet) 25 50 75 100

Guage: 16 14 12 10

Before using an extension cord, inspect it for loose or exposed wires, damaged insulation, and defective fittings. Make any needed repairs or replace the cord if necessary. B&D has extension cords available that are U.L. (C.S.A. in Canada) listed for outdoor use.

: CHART FOR MINIMUM WIRE SIZE (AWG) OF EXTENSION CORDS

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: one 3680 miter saw, one carbide saw blade and one blade wrench in wrench pocket.

Familiarization

Your miter saw is fully assembled in the carton. Open the box and lift the saw out by the convenient carrying handle, as shown in Figure 1. Place the saw on a smooth, flat surface such as a workbench or strong table. Examine Figures on inside front cover of this manual to become familiar with the saw and its various parts. The following section on adjustments will refer to these terms and you must know what the parts are.

Press down lightly on the operating handle and pull out the lock down pin, as shown in Figure 2. Gently release the downward pressure and allow the arm to rise to its full height. Use the lock down pin when carrying the saw from one place to another. Always use the carrying handle or the hand indentations to transport the saw.

FFiigguurree 1

ADJUSTMENT AND SET UP

Specifications

CCaappaacciittyy ooff ccuut

48˚ miter left and right 0˚ miter 48˚ bevel left: 3˚ right Max. Height 3.9" Result Width 5.9"

45˚ miter 45˚ bevel

Max. Height 3.9" Result Width 4.1" Max. Height 2.7” Result Width 5.9” Max. Width 5.5" Result Height 2.5" Max Width 7.9” Result Height 1.7”

DDrriivve

2000 Watts out 13 Amp Motor Cut Helical Gears with Ball Bearings Carbide Blade, 4000 RPM Automatic Electric Brake

Bench Mounting

Holes are provided in all four feet to facilitate bench mounting. (Two different sized holes are provided to accommodate different sizes of screws. Use either hole, it is not necessary to use both.) Always mount your saw firmly to prevent movement. To enhance the tool’s portability, it can be mounted to a piece of 1/2” or thicker plywood which can then be clamped to your work support or moved to other job sites and reclamped.

NNOOTTEE: 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 surely interfere with the proper operation of the saw.

CCAAUUTTIIOONN:: wise uneven. If the saw rocks on the surface, place a thin piece of material under one saw foot until the saw sits firmly on the mounting surface.

FFiigguurree 2

LOCK DOWN PIN

Max. Width 7.9" Result Height 2.5"

If you elect to mount your saw to a piece of plywood, make sure that the mounting screws

To prevent binding and inaccuracy, be sure the mounting surface is not warped or other-

GUARD BRACKET SCREW

FFiigguurree 3

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