6˝ VARIABLE SPEED SCROLL SAW Model # 3920 bit.ly/wenvideo IMPORTANT: 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.
TABLE OF CONTENTS 2 3 5 6 8 9 15 19 20 22 Technical Data General Safety Rules Specific Safety Rules For Scroll Saw Electrical Information Know 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: 2 3920 120 V, 60 Hz, 1.
GENERAL SAFETY RULES Safety is a combination of common sense, staying alert and knowing how your item works. SAVE THESE SAFETY INSTRUCTIONS. WARNING: To avoid mistakes and serious injury, do not plug in your tool 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.
GENERAL SAFETY RULES 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-resistant rubber-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.
SPECIFIC RULES FOR THE SCROLL SAW WARNING: Do not operate the scroll saw until it is assembled and adjusted. Do not operate the scroll saw until you have read and understood both the following instructions and the warning labels on the scroll saw. BEFORE OPERATING: 1. Check for both proper assembly and proper alignment of moving parts. 2. Understand the function and proper use of the ON/OFF switch. 3. Know the condition of the scroll saw.
SPECIFIC RULES FOR THE SCROLL SAW WHEN OPERATING THE SCROLL SAW 1. To avoid injury from unexpected scroll saw movement: - Use the scroll saw on a firm level surface with adequate space for handling and supporting the work piece. - Be sure the scroll saw cannot move when operated. Secure the scroll saw to a workbench or table with wood screws or bolts, washers and nuts. 2. Before moving the scroll saw, unplug the power cord from the electrical outlet. 3.
ELECTRICAL INFORMATION 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 equipment grounding conductor. If repair or replacement of the electric cord or plug is necessary, DO NOT connect the equipment grounding conductor to a live terminal.
KNOW YOUR SCROLL SAW A - Blade Tension Knob Motor: B - Dust Cover C - Rubber Bearing Covers D - Table E - Sawdust Blower F - Storage Area G - Base H - Bevel Scale and Pointer I - Table/Bevel Lock Knob J - Lower Blade Holder K - Blade Guard Foot L - Blade Guard Foot Lock Knob M - LED Light N - Upper Blade Holder O - Table Insert P - Sawdust Collection Port Q - ON/OFF Switch R - Speed Control Knob S - Table Adjusting Screw 8
ASSEMBLY AND ADJUSTMENTS UNPACKING Carefully unpack the scroll saw and all of its parts. Compare them against the list below. Do not discard the carton or any packaging until the scroll saw is completely assembled. CAUTION: do 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. FIGURE 1 INCLUDES (Fig.
ASSEMBLY AND ADJUSTMENTS Prior to making adjustments, mount the scroll saw on a stable surface. See “Bench mounting the saw.” FIGURE 3 ADJUSTMENTS ALIGN THE BEVEL INDICATOR (Fig. 3-6) The bevel indicator has been factory adjusted. It should be rechecked prior to use for best operation. 1. Remove the blade guard foot (1) using the hex key (2) to loosen the screw. 2. Loosen the table bevel lock knob (3) and move the table until it is approximately at a right angle to the blade. FIGURE 4 3.
ASSEMBLY AND ADJUSTMENTS BENCH MOUNTING THE SAW (Fig. 7-8) Before operating the saw, it must be firmly mounted to a workbench or another rigid frame. Use the base of the saw to mark and pre-drill the mounting holes.If the saw is to be used in one location, permanently secure it to the work surface using wood screws if mounting to wood. Use bolts, washers, and nuts if mounting into metal. To reduce noise and vibration, install a soft foam pad (not supplied) between the scroll saw and the workbench.
ASSEMBLY AND ADJUSTMENTS FIGURE 9 ADJUSTING THE DUST BLOWER (Fig. 9) For best results, the dust blower tube (1) should be adjusted to direct air at both the blade and the work piece. FIGURE 10 1 SAWDUST COLLECTION PORT (Fig. 10 and 11) FIGURE 11 12 This scroll saw allows a hose or vacuum accessory (not provided) to be connected to the dust chute (1).
ASSEMBLY AND ADJUSTMENTS BLADE SELECTION (Fig. 12) This scroll saw accepts 5” length pin end and pinless blades, with a wide variety of blade thicknesses and widths. The type of material and intricacies of cutting operations will determine the number of teeth per inch. Always select the narrowest blades for intricate curve cutting and the widest blades for straight and large curve cutting operations. The following table represents suggestions for various materials.
ASSEMBLY AND ADJUSTMENTS BLADE REMOVAL AND INSTALLATION (Fig. 13 to 15) WARNING: To prevent personal injury, always turn saw OFF and disconnect the plug from the power source before changing blades or making adjustments. This saw uses pin-end and pinless blades. Pin-end blades are thicker for stability and for faster assembly. They provide faster cutting on a variety of materials.
OPERATION RECOMMENDATIONS FOR CUTTING A scroll saw is basically a curve-cutting machine. It can also be used for straight cutting and beveling or angle cutting operations. Please read and understand the following items before attempting to use the saw. 1. When feeding the work piece into the blade do not force it against the blade. This could cause blade deflection. Allow the saw to cut the material by guiding the work piece into the blade as it cuts. 2. The blade teeth cut material ONLY on the down stroke.
OPERATION ON/OFF & SPEED CONTROL SWITCH (Fig. 16) Always wait for the saw to come to a complete stop before restarting. 1. To turn the saw on, flip the ON/OFF switch to ON (2). When first starting the saw, it is best to move the speed control knob (1) to the middle speed position. 2. Adjust the blade speed to the desired setting between 400 to 1600 strokes per minute (SPM). Turning the control knob clockwise increases 2 speed; turning it counterclockwise reduces speed. 3.
OPERATION ANGLE CUTTING (BEVELING) (Fig. 18) 1. Layout or secure design to work piece. FIGURE 18 2. Move the blade guard foot to the highest position by loosening the height adjustment knob (1). Retighten. 3. Tilt the table to the desired angle by loosening the table bevel lock handle (2). Move the table to the proper angle using the degree scale and the pointer (3). 4. Tighten the table bevel lock handle (2). 5. Loosen the blade guard screw, and tilt the blade guard to the same angle as the table.
OPERATION RIP OR STRAIGHT LINE CUTTING (Fig. 20) 1. Raise the blade guard foot (1) by loosening the height adjustment knob (2). FIGURE 20 2. Measure from the tip of the blade to the desired distance. Position the straight edge parallel to the blade at that distance. 3. Clamp the straight edge to the table. 4. Recheck your measurements using the work piece to be cut and make sure the straight edge is secure. 5.
MAINTENANCE WARNING: Always turn the switch OFF and unplug the power cord from the outlet before maintaining or lubricating the scroll saw. To ensure that the wood glides smoothly across the work surface, periodically apply a coat of paste wax (sold separately) to the surface of the worktable. If the power cord is worn out or damaged in any way, replace it immediately. Do not attempt to oil the motor bearings or service the motor’s internal parts. LUBRICATION (Fig.
EXPLODED VIEW & PARTS LIST 20
EXPLODED VIEW & PARTS LIST Item 1 2 3 4 5 6 7 8 9 10 11a 11b 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 Stock# 90223-001 90223-002 90223-003 90223-004 90223-005 90223-006 90223-007 90223-008 90223-009 90223-010 90223-011a 90223-011b 90223-012 90223-013 90223-014 90223-015 90223-016 90223-017 90223-018 90223-019 90223-020 90223-021 90223-022 90223-023 90223-024 90223-025 90223-026 90223-027 90223-028 90223-029 90223-030 90223-031 90223-032 90223-033 90223-034 90223-035 DESCRIPT
LIMITED TWO YEAR WARRANTY WEN Products is committed to building tools that are dependable for years. Our warranties are consistent with this commitment and our dedication to quality. LIMITED WARRANTY OF WEN CONSUMER POWER TOOLS PRODUCTS FOR HOME USE GREAT LAKES TECHNOLOGIES, LLC (“Seller”) warrants to the original purchaser only, that all WEN consumer power tools will be free from defects in material or workmanship for a period of two (2) years from date of purchase.
