what is the difference between the 3921 and 3922?

These two units are almost identical. The only differences are that the 3921 includes a flexible work light and a blade storage compartment on the side, while 3922 features a special side panel that folds open for easy clean up and blade changes. Also, the 3921 uses the two-direction adapter system for holding blades (better for pinned blades), while the 3922 uses a standard blade holding system (better for pinless blades).

Did anyone find out if a miter gauge or some type of guard can be used to make straight cuts?

If your material to be cut allows enough room on the table portion to attach a straight edge with clamps, it will work just fine. Make sure that your straight edge is aligned with the saw blade so you don't end up breaking blades. Lastly, the thicker the material, use blades that have fewer teeth per inch or TPI. I am using a 7 TPI blade to cut anything over 1/2 inch, so far, it is working but slow cutting.

I am new to scroll saws so have to ask. Is it worth the $40 difference in price for the 3921 over the 3920 and why.

I can't speak for the 3921, but the 3920 is okay at best, it's actually nice if you use pinned end blades. However if you plan on using pinnless blades I would suggest a diffirent saw. Hope this helps

Have a new 3922 scroll saw. Upper and lower pinless blade holders wont pinch together to hold the blades. Wen are you going to back up your saw ?

You have to make sure they are the correct length and it does take some work getting them in properly. It too two people to load mine.

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🛠️ Master every cut with precision and style — don’t let your projects settle for less!

PRECISION SPEED CONTROL - Adjust from 400 to 1600 strokes per minute to match every intricate project.
TOOL FREE BLADE CHANGES - Switch blades effortlessly with a thumb screw adapter and onboard storage for seamless workflow.
CLEAN SECURE WORKSPACE - Integrated air pump and dust port keep your vision clear while the foot clamp locks your workpiece tight.
VERSATILE 45 BEVEL TABLE - Achieve flawless angled cuts with a spacious 16x11-inch table that tilts left up to 45°.
DUAL DIRECTION BLADE INNOVATION - Cut beyond limits with blades that rotate 90° for infinite ripping capacity.

The WEN 16-Inch Variable Speed Scroll Saw (Model 3921) is engineered for professional-grade woodworking with a unique dual-direction blade system, variable speed from 400 to 1600 SPM, and a 45° beveling table. Its cast iron base minimizes vibration, while the flexible work light and dust management system ensure a clean, precise cutting environment. Tool-free blade changes and onboard storage streamline your workflow, making it the ultimate saw for intricate, angled, and thick wood cuts up to 2 inches.

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Manufacturer	WEN
Part number	3921
Item Weight	11.6 Kilograms
Product Dimensions	67.01 x 33.02 x 37.47 cm; 11.57 kg
Item model number	3921
Size	Tool-Free Blade Changes
Color	Black,orange
Style	with Flexible Work Light
Pattern	Scroll Saw
Power source type	Corded Electric
Voltage	120 Volts
Wattage	144 watts
Item Package Quantity	1
Handle Material	Metal Alloy
Blade Length	16 Inches
Speed	1600 RPM
Measurement System	Metric
Specification met	EMC, GS, ISO 14001, OSHA
Special Features	Brushless
Included components	Scroll Saw
Batteries Required?	No

WEN Variable Speed Scroll Saw, 16-Inch with Work Light (3921)

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