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FLSun V400

Year Released:
Build Volume:
300 x 300 x 410 mm (~12 x 12 x 16.25 in)
Price Range:
$825 - 850

About the FLSun V400

The FLSUN V400 is a desktop 3D printer released in 2022, known for its large print volume and versatility. With a generous build area of 300 x 300 x 410 mm, it allows users to create sizable 3D prints, making it suitable for projects that demand larger dimensions. The printer features a sturdy aluminum open enclosure with delta kinematics that enhances stability during the printing process, contributing to accurate and reliable prints. Additionally, the FLSUN V400’s precise direct drive extruder supports a variety of filament materials, enabling users to experiment with different materials and achieve diverse results. The FLSun V400 comes with everything you need to get started: tools to build and maintain the printer, side cutters, a nozzle cleaner, grease, a dusting brush, and a USB drive. You also get a spare thermistor, heating rod, short-length of PTFE tube, and 200g of filament. There’s a paper copy of the user manual and the USB drive has three video guides if you need additional help. The USB drive also has a copy of Cura 4.13.1, a standard profile, and several pre-sliced models for testing. In draft mode, the printer can eat through filament in a fraction of the time needed for a standard printer and the prints it produces at speed are of excellent quality. As impressive as this printer is, it’s not exactly perfect. The build quality has a few minor issues, such as the channel covers not snapping into place and the spool holder appears to be an afterthought. There’s a harsh metal edge that drags along the inside of the spool and puts a strain on the direct drive’s motor. These are small things, but when you’re talking about a more expensive printer you’d hope the small things are covered, such as the addition of a replacement nozzle. Equipped with a user-friendly interface and various connectivity options, including USB and SD card, the FLSUN V400 offers flexibility in file transfer and printing. The printer is praised for its affordability considering its large build volume and easy assembly, making it an attractive option for those seeking a cost-effective solution for large-scale 3D printing projects.

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Benefits of the FLSun V400

Modern mainboard features - Many 3D printer features relate to the version of the mainboard and firmware, including features like resuming prints after a power failure and support for silent stepper motor drivers for quieter printing. Newer boards also include safety features like thermal runaway protection which shuts the printer down if it detects issues with overheating.

All-metal hot end - An all-metal hot end allows for printing at high temperatures up to 300C, while standard hot ends are capped at 260C before the PTFE material begins to degrade. All-metal hot ends are also less susceptible to jamming, and do not degrade as fast.

Has touch screen - having a touch screen isn't a deal-maker or breaker, but it is a convenient feature that makes it easier to navigate the interface when you are printing files and configuring 3D printing settings.

Easy to assemble - This 3D printer is shipped with most of the parts pre-assembled, and you will only need to attach a few components and connect a couple cables in order to get the machine ready to print.

Direct drive extruder - Direct drive extruders are mounted right above the hot end, and push the filament directly into it, as opposed to a side mounted bowden extruder setup. We prefer direct drive extruders to bowden since they are less prone to jamming and typically require less maintenance. they also are much easier to use with flexible materials

Generous Build volume - A larger than average build volume means that you will be able to print larger parts without the need to split them into pieces and attach them together, which is especially useful with functional parts. If you have the room for the larger footprint, we definitely recommend going with a larger 3D printer, since you can always print small parts on a larger printer.

Wireless printing - In addition to the standard USB and SD card connections, you can connect wirelessly to this printer to print from your computer or mobile device.

Dual gear extruder - A dual gear extruder grips filament from both sides and can exert much more force on the filament before slipping. It helps with all filaments but especially with flexible, slippery TPU.

Where to buy the FLSun V400

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Brand Summary: FLSun

FLsun is recognized in the 3D printing market for creating affordable printers that are accessible to a wide audience, from beginners to more advanced users. A distinctive aspect of FLsun's lineup is their focus on Delta printers, which are known for their speed and efficiency. Delta printers, characterized by their unique triangular structure, allow for faster print speeds compared to traditional Cartesian printers. This design can enhance print quality for certain types of projects but may also present a steeper learning curve due to their distinct calibration and maintenance requirements. Despite the advantages of speed and user-friendly assembly that FLsun printers offer, users might face challenges with noise during operation and navigating customer support or finding replacement parts. These issues point to areas where FLsun could improve to enhance user satisfaction. Overall, FLsun's commitment to Delta printers showcases their innovative approach in the 3D printing industry, making advanced printing technologies more accessible. However, the balance between affordability, performance, and after-sales support remains a crucial factor for potential users to consider.

Learn more about FLSun.

Details & Specifications


Year Released
Scale Model:
Build Volume
300 x 300 x 410 mm
Bed Material
PEI Spring Steel
Nominal Maximum Speed
600 mm/s

Extruder & Hot-end

Extruder Type
Direct Drive
Extruder Construction
All-Metal Dual Gear
Hot-end Construction
Cooling Fan
Dual side mount

Physical Characteristics

Physical size
483 x 406 x 1143 mm
Open enclosure


Auto Leveling
Touch Probe
Assembly Time
🔧🔧🔧 1 hour
User Interface
Full Color Touch Screen
Built In WiFi Support
Other Features
Wifi connectivity


Base Voltage
24 V
Quiet Motor Drivers

Where to Buy


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