WEN 3912 User Manual

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Table of contents

Technical data……………………………………………………….. 3
General safety rules………………………………………………….. 4
Specific safety rules for band saws………………………………….. 6
Electrical information………………………………………………... 7
Know your band saw………………………………………………… 9
Assembly and adjustments…………………………………………… 10
Operation…………………………………………………………….. 17
Maintenance…………………………………………………………. 18
Exploded view and parts list…………………………………………. 19
Warranty……………………………………………………………… 24

Technical data

10 inch Band Saw with Stand
Model: 3912

Motor: 120 V, 60 Hz, 3.4 A
Motor speed: 1720 RPM (no load)
Blade speed: 2920 FPM
Blade length: 67-3/8"
Blade width range: 1/8" to 1/2"
Depth of throat at 90°: 9-1/2"
Maximum depth of cut at 90°: 4"
Maximum depth of cut at 45°: 2"
Table size: 13-1/9"x13-3/8"
Table tilt: 0° to 45°
Weight: 94.5 lbs

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General safety rules

Safety is a combination of common sense, staying alert and knowing how your band saw works.

SAVE THESE SAFETY INSTRUCTIONS.

WARNING: To avoid mistakes that could cause serious injury, do not plug in the

band saw until the following steps have been read and understood.

1. READ and become familiar with this entire instruction manual. LEARN the tool’s

applications, limitations, and possible hazards.

2. AVOID DANGEROUS CONDITIONS. Do not use power tools in wet or damp areas or

expose them to rain. Keep work areas well lit.

3. DO NOT use power tools in the presence of flammable liquids or gases.

4. ALWAYS keep your work area clean, uncluttered, and well lit. DO NOT work on floor

surfaces that are slippery with sawdust or wax.

5. KEEP BYSTANDERS AT A SAFE DISTANCE from the work area, especially when the

tool is operating. NEVER allow children or pets near the tool.

6. DO NOT FORCE THE TOOL to do a job for which it was not designed.

7. DRESS FOR SAFETY. Do not wear loose clothing, gloves, neckties, or jewelry (rings,

watches, etc.) when operating the tool. Inappropriate clothing and items can get caught in
moving parts and draw you in. ALWAYS wear non-slip footwear and tie back long hair.

8. WEAR A FACE MASK OR DUST MASK to fight the dust produced by sawing operations.

WARNING: Dust generated from certain materials can be hazardous to your health.
Always operate the band saw in a well-ventilated area and provide for proper dust
removal. Use dust collection systems whenever possible.

9. ALWAYS remove the power cord plug from the electrical outlet when making adjustments,

changing parts, cleaning, or working on the tool.

10. KEEP GUARDS IN PLACE AND IN WORKING ORDER.

11. AVOID ACCIDENTAL START-UPS. Make sure the power switch is in the OFF position

before plugging in the power cord.

12. REMOVE ADJUSTMENT TOOLS. Always make sure all adjustment tools are removed

from the saw before turning it on.

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General safety rules (continued)

13. NEVER LEAVE A RUNNING TOOL UNATTENDED. Turn the power switch to OFF.

Do not leave the tool until it has come to a complete stop.

14. NEVER STAND ON A TOOL. Serious injury could result if the tool tips or is accidentally

hit. DO NOT store anything above or near the tool.

15. DO NOT OVERREACH. Keep proper footing and balance at all times. Wear oil-

resistantrubber-soled footwear. Keep the floor clear of oil, scrap, and other debris.

16. MAINTAIN TOOLS PROPERLY. ALWAYS keep tools clean and in good working order.

Follow instructions for lubricating and changing accessories.

17. CHECK FOR DAMAGED PARTS. Check for alignment of moving parts, jamming,

breakage, improper mounting, or any other conditions that may affect the tool’s operation.
Any part that is damaged should be properly repaired or replaced before use.

18. MAKE THE WORKSHOP CHILDPROOF. Use padlocks and master switches and

ALWAYS remove starter keys.

19. DO NOT operate the tool if you are under the influence of drugs, alcohol, or medication

that may affect your ability to properly use the tool.

20. USE SAFETY GOGGLES AT ALL TIMES that comply with ANSI Z87.1. Normal safety

glasses only have impact resistant lenses and are not designed for safety. Wear a face or
dust mask when working in a dusty environment. Use ear protection such as plugs or muffs
during extended periods of operation.

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Specific safety rules for band saws

1. To avoid injury from unexpected movement, make sure the saw is on a firm, level surface

and properly secured to prevent rocking. Make sure there is adequate space for operations.
Bolt the saw to a support surface to prevent slipping or sliding during operation.

2. Turn off and unplug the saw before moving it.

3. Use the correct size and style of blade.

4. Make sure the blade teeth point down and toward the table.

5. Blade guide, supports, bearings, and blade tension must be properly adjusted to avoid

accidental blade contact and to minimize blade breakage. To maximize blade support,
always adjust the upper blade guide and blade guard so that it barely clears the workpiece.

6. Table TILT lock handle should be tight.

7. Use extra caution with very large, very small, or awkward workpieces.

8. Use extra supports to prevent workpieces from sliding off the tabletop.

9. Workpieces should be secured so they don’t twist, rock, or slip while being cut.

10. Plan intricate or small work carefully to avoid pinching the blade. Avoid awkward

operations and hand positions to prevent accidental contact with the blade.

11. Small pieces should be secured with clamps or fixtures. Do not hold small pieces with your

hand because your fingers might go under the blade guard.

12. Support round work properly (use a V block or press it against the miter gauge) to prevent

the piece from rolling and the blade from biting.

13. Only cut one workpiece at a time. Make sure the table is clear of everything except the

workpiece and its guides before you turn the saw on.

14. Always WATCH the saw run before each use. If there is excessive vibration or unusual

noise, stop immediately. Turn the saw off. Unplug it immediately. Do not start the saw
again until the problem has been located and corrected.

15. To free any jammed material, turn the switch off. Remove the switch key and unplug the

saw. Wait for all moving parts to stop before removing the jammed material.

16. Don’t leave the work area until all moving parts have stopped. Shut off the power to master

switches. Remove the switch key from the band saw and store it in a safe place, away from
children. Childproof the workshop!

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Electrical information

Grounding Instructions

IN THE EVENT OF A MALFUNCTION OR BREAKDOWN, grounding provides the path of
least resistance for electric current and reduces the risk of electric shock. This tool is equipped
with an electric cord that has 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 does not fit the outlet, have the proper outlet
installed by an electrician.

IMPROPER CONNECTION of the equipment-grounding conductor can result in electric shock.
The conductor with the green insulation (with or without yellow stripes) is the equipment­grounding conductor. If repair/replacement of the electric cord or plug is necessary, DO NOT
connect the equipment-grounding conductor to a live terminal.

CHECK with a licensed electrician or service personnel if you do not completely understand
the grounding instructions or if the tool is properly grounded.

USE ONLY THREE-WIRE EXTENSION CORDS with 3-prong plugs and 3-prong outlets that
accept the tool's plug as shown in Fig. A. Repair or replace a damaged or worn cord
immediately.

CAUTION: In all cases, make certain the outlet in question is properly grounded. If you are
not sure if it is, have a licensed electrician check the outlet.

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Electrical information (continued)

WARNING: This saw is for indoor use only. Do not expose to rain or use in damp

locations.

Guidelines for Using Extension Cords

Make sure your extension cord is in good condition. When using an extension cord, be sure to
use one heavy enough to carry the current your product will draw. An undersized cord will
cause a drop in line voltage resulting in loss of power and overheating. The table below shows
the correct size to be used according to cord length and nameplate ampere rating. When in
doubt, use a smaller-numbered gauge (the smaller the gauge number, the heavier the cord)

Minimum Gauge for Extension Cords (AWG)

(when using 120 V only)

Ampere Rating Total Length of Cord in feet

More Than Not More Than 25 Feet 50 Feet 100 Feet 150 Feet

0 Amp 6 Amp 18 Gauge 16 Gauge 16 Gauge 14 Gauge

Be sure your extension cord is properly wired and in good condition. Always replace a
damaged extension cord or have it repaired by a qualified person before using it.

Protect your extension cords from sharp objects, excessive heat and damp or wet areas.
Use a separate electrical circuit for your tools. This circuit must not be less than a #12 wire and
should be protected with a 15 A time-delayed fuse. Before connecting the motor to the power
line, make sure the switch is in the OFF position and the electric current is rated the same as the
current stamped on the motor nameplate. Running at a lower voltage will damage the motor.

WARNING: This tool must be grounded while in use to protect the operator from
electrical shock.

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