Wen 3920 Manual Download Page 1

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Model # 3920

16˝ VARIABLE

SPEED SCROLL SAW

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Your new tool has been engineered and manufactured to WEN’s highest standards for dependability,

ease of operation, and operator safety. When properly cared for, this product will supply you years

of rugged, trouble-free performance. Pay close attention to the rules for safe operation, warnings,

and cautions. If you use your tool properly and for intended purpose, you will enjoy years of safe,

reliable service.

IMPORTANT:

NEED HELP? CONTACT US!

Have product questions? Need technical support?

Please feel free to contact us at:

800-232-1195

[email protected]

WENPRODUCTS.COM

(M-F 8AM-5PM CST)

Summary of Contents for 3920

Page 1: ...will supply you years of rugged trouble free performance Pay close attention to the rules for safe operation warnings and cautions If you use your tool properly and for intended purpose you will enjoy years of safe reliable service IMPORTANT NEED HELP CONTACT US Have product questions Need technical support Please feel free to contact us at 800 232 1195 techsupport wenproducts com WENPRODUCTS COM ...

Page 2: ...Your Scroll Saw Assembly and Adjustments Operation Maintenance Exploded View and Parts List Warranty TECHNICAL DATA Model Number Motor Speed Throat Depth Blade Blade Stroke Cutting Capacity Table tilt Overall dimensions Weight 3920 120 V 60 Hz 1 2 A 550 to 1600 SPM 16 5 pinned pinless 9 16 2 at 90 0 to 45 left 26 3 8 by 13 by 14 3 4 27 5 lb 2 ...

Page 3: ...ch 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...

Page 4: ...akage 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 ...

Page 5: ...h rotating equipment Do not put your fingers in a position where they risk contacting the blade if the work piece unexpectedly shifts or your hand unexpectedly slips Do not cut a work piece too small to be held safely Do not reach under the scroll saw table when the motor is running Do not wear loose clothing or jewelry Roll long sleeves above the elbow Tie back long hair 7 To avoid injury from ac...

Page 6: ...e from a qualified person if you re not thoroughly familiar with the operation of scroll saws Before starting the saw make sure the blade tension is correct Recheck and adjust tension as needed Make sure the table is locked into position before starting the saw Do not use dull or bent blades When cutting a large work piece make sure the material is supported at the table height Turn the saw OFF an...

Page 7: ...idelines 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 volt age 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 d...

Page 8: ...8 KNOW YOUR SCROLL SAW ...

Page 9: ...not lift the saw by the arm that holds the blade The saw will be damaged WARNING To avoid injury from accidental startups turn switch OFF and remove the plug from the power source outlet before making any adjustments INCLUDES Fig 1 A Scroll saw with attached light B Extra pin blade C Wrench STORAGE AREA Fig 2 A convenient storage location for the hex key and extra blade can be found beneath the sa...

Page 10: ... the table adjusting screw by turning it clockwise 4 Use a combination square 7 to set the table ex actly 90 to the blade 8 If there is space between the square and blade adjust the table angle until the space is closed 5 Lock the table bevel lock knob under the table 3 to prevent movement 6 Tighten the adjusting screw under the table until the tip of the screw touches the table Tighten the lock n...

Page 11: ...lifting the saw ASSEMBLY AND ADJUSTMENTS FIGURE 8 Carry the saw by the base Do not carry the saw by the power cord Secure the saw in a position where people cannot stand sit or walk behind it Debris thrown from the saw could injure people standing sitting or walking behind it Secure the saw on a firm level surface where the saw can not rock Make sure there is adequate room for handling and properl...

Page 12: ...PORT Fig 10 and 11 This scroll saw allows a hose or vacuum accessory not provided to be connected to the dust chute 1 If excessive sawdust buildup occurs inside the base use a wet dry vacuum cleaner or manually re move sawdust by removing the screws 2 and metal plate on the left side of the saw Reattach the metal plate and screws before starting the saw This will keep your saw cutting efficiently ...

Page 13: ...es A smaller blade width can cut circles with smaller diameters Note Thinner blades will have more possibilities for blade deflection when cutting angles are not perpendicular to the table ASSEMBLY AND ADJUSTMENTS BLADE CARE To maximize the life of your scroll saw blades 1 Do not bend blades when installing 2 Always set proper blade tension 3 Use the right blade see instruction on replacement blad...

Page 14: ...on the table insert to remove 3 Loosen the upper blade holder knob 2 and lower blade holder knob 3 Push down on the upper blade holder to remove the blade from the holder Remove the blade from the lower blade holder CAUTION Install the blade with the teeth pointing down ward 4 To install the blade hook the blade in the recess of the lower blade holder 5 While pushing down on the upper blade holder...

Page 15: ...n cutting wood one inch thick or less 6 When cutting wood thicker than one inch guide the wood very very slowly into the blade and take extra care not to bend or twist the blade while cutting in order to maximize blade life 7 Teeth on scroll saw blades wear out and the blades must be replaced frequently for best cutting re sults Scroll saw blades generally stay sharp for 1 2 hour to 2 hours of cut...

Page 16: ...blade or making adjustments FREEHAND CUTTING Fig 17 1 Lay out desired design or secure design to the work piece 2 Raise the blade guard foot 1 by loosening the height adjustment knob 2 3 Position the work piece against the blade and place the blade guard foot against the top surface of the work piece 4 Secure the blade guard foot 1 by tightening the height adjustment knob 2 5 Remove the work piece...

Page 17: ... right side of the blade Lower the blade guard foot against the surface by loosening the height adjustment knob Retighten 7 Follow steps 5 to 7 under Freehand cut ting INTERIOR CUTTING Fig 19 1 Lay out the design on the work piece Drill a 1 4 hole in the work piece 2 Remove the blade See Blade removal and installation 3 Place the work piece on the saw table with the hole in the work piece over the...

Page 18: ...move the work piece from the blade prior to turning the scroll saw ON CAUTION In order to avoid uncontrollable lifting of the work piece and reduce blade breakage do not turn the switch on while the work piece is against the blade 8 Position the work piece against the straight edge prior to touching the leading edge of the work piece against the blade 9 Slowly feed the work piece into the blade gu...

Page 19: ...rings after every 50 hours of use 1 Turn the saw on its side and remove the cover 2 Squirt a generous amount of SAE 20 oil lightweight motor oil sold separately around the shaft and bearing 3 Let the oil soak in overnight 4 Repeat the above procedure for the opposite side of the saw BLADES To maximize the life of your scroll saw blades 1 Do not bend blades when installing 2 Always set proper blade...

Page 20: ...20 EXPLODED VIEW PARTS LIST ...

Page 21: ...0B 042 screw ST4 2X9 5 43 3920B 043 Washer 44 3920B 044 Screw M5X16 45 3920B 045 Wrench S3 46 3920B 046 Drop Foot Lock Knob 47 3920B 047 Drop Foot Fixing Pole Item Stock Description 48 3920B 048 Screw M5X30 49 3920B 049 PCB 50 3920B 050 Drop foot 51 3920B 051 Flat Washer 6 52 3920B 052 Screw M6X10 53 3920B 053 PVC Pipe 54 3920B 054 Big Washer 6 55 3920B 055 Screw M6X40 56 3920B 056 screw M6X20 57 ...

Page 22: ...The prod uct must be shipped in its original container or an equivalent properly packed to withstand the hazards of ship ment The product must be fully insured with a copy of the warranty card and or the proof of purchase enclosed There must also be a description of the problem in order to help our repairs department diagnose and fix the issue Repairs will be made and the product will be returned ...

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