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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WEN

Product ID: 183710303

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Details

Brand
WEN
Color
Black orange
Blade Material
Iron
Surface Recommendation
Wood
Power Source
Corded

📐Table bevels up to 45°

🪵Cuts wood up to 2 inches thick

⚙️Variable speed 550-1600 SPM

Description

🛠️ Master every cut with precision and ease — don’t let your workshop fall behind!

ROCK SOLID STABILITY - Heavy cast iron base eliminates vibration, giving you steady, professional-grade results every time.
ANGLE YOUR CREATIVITY - Spacious 16x10-inch table bevels up to 45° for flawless angled cuts that elevate your projects.
TOOL FREE BLADE SWAPS - Unique side panel and thumb screw adapter make blade changes a breeze—no tools, no downtime.
STAY FOCUSED STAY CLEAN - Built-in air pump and 1.5-inch dust port keep your workspace clear so you never miss a detail.
EFFORTLESS PRECISION CONTROL - Dial in your perfect cut speed from 550 to 1600 strokes per minute for unmatched versatility.

The WEN 3922 is a 16-inch variable speed scroll saw designed for professional-quality woodworking. It features a powerful 225-watt motor with speeds adjustable from 550 to 1600 strokes per minute, a spacious beveling table up to 45 degrees, and the ability to cut wood up to 2 inches thick. Its innovative side panel and thumb screw blade adapter enable quick, tool-free blade changes. Additional features include a cast iron base for stability, an air pump and dust port for a clean workspace, and a foot lock clamp for secure operation. Backed by a two-year warranty, this saw is engineered for precision, convenience, and durability.

Specifications

Brand	WEN
Color	Black,orange, Orange, Silver
Blade Material	Iron
Surface Recommendation	Wood
Power Source	Corded Electric
Special Feature	Brushless
Included Components	Thumb screw blade adapter for tool-free blade changes, a cast iron base, an air pump, a dust port, a foot lock clamp, and three 5-inch blades
Product Dimensions	16"L x 15.3"W x 13"H
Voltage	15 Volts
Warranty Type	limited warranty
Item Weight	24.9 Pounds
Blade Length	16 Inches
Number of Teeth	18
Number of Batteries	1 Lithium Ion batteries required.
Cutting Angle	45 Degrees
Wattage	225 watts
Blade Shape	Rectangular
Global Trade Identification Number	00044459039228
Handle Material	Plastic
UPC	044459039228
Manufacturer	WEN
Part Number	3922
Item Weight	24.9 pounds
Item model number	3922
Batteries	1 Lithium Ion batteries required.
Style	with Easy-Access Blade Changes
Pattern	Scroll Saw
Item Package Quantity	1
Special Features	Brushless
Batteries Required?	No

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