Geometeric Graph

LK4 Pro

Silent Printing FDM 3D Printer
Longer Online Store

Printer Description

LONGER LK4 PRO 3D Printer (9).jpg
  • Build Volume: 220mm(L)*220mm(W)*250mm(H)

  • Layer Thickness: 0.1-0.4mm; Printing Speed: 180mm/s; suggested 30-60mm/s

  • Heated Bed: Yes; Extrusion Temperature: room temp to 250℃

  • Built-in 3kits of TMC2208 for Quiet Printing;

  • Filament Type: PLA, ABS, HIPS, PETG, Wood

  • Support Software: Cura, Repetier,etc; Operating Systems: Windows/Mac/Linux

  • File Format: STL/G-CODE;

  • Connection:USB cable or TF card off-line print

  • Product Dimension: 425mm(L)*405mm(W)*505mm(H);

  • Gross Weight: 8.6kg

  • Operating Temperature: 5℃-35℃;

  • Relative Humidity: 30%-90%

  • Electricity: Input:100-120V AC 7A,200-240V AC 3.5A, 50-60Hz;

  • Output:24V/DC 15A; Maximum Power: 280W

LONGER FDM 3D Printer LK4 PRO (14).jpg
Extra-Large Build Platform


The printing size is 8.7*8.7*9.8 inches, the printing speed max up to 180mm/s, which makes your ideas came true quickly.

LONGER FDM 3D Printer LK4 PRO (4).jpg
4.3-inch large touch screen


Easy to operate, brand new friendly UI to preview printing process on the screen. This beautiful color touch screen lets you say goodbye to manual operation knob.

LONGER FDM 3D Printer LK4 PRO (3).jpg
TMC2208 Ultra Quiet Drive


It uses TMC2208 ultra-quiet drive, reduces the noise to the lowest level. If you have troubled with other printer's noise, this one must be your best choice.

LONGER FDM 3D Printer LK4 PRO (9).jpg
Open Sources


LK4 Pro  is open source, allow users to improve their printer upon the source code and share the changes within the community, which can improve imagination and innovation, resulting in an improved experience for all.

LONGER FDM 3D Printer LK4 PRO (12).jpg
Ideal for Kids and STEM Projects, the best choice for the users who love DIY, maker, Education, Research, etc…
LONGER FDM 3D Printer LK4 PRO (6).jpg
Recover Printing Function


Resume printing after power loss; filament detection sensor system, automatically suspend printing when the filament runs out to save time and filament.

Unique Tempered Glass Design


This printer integrated with a tempered glass bed, greatly resolving warped bed issues. And provides protection to your heated bed and easy to remove the printing models after cooling.

LONGER FDM 3D Printer LK4 PRO (2).jpg
Built-in Safe Power Supply


Built-in power to ensures stable and sufficient power, heat up the hotbed fastly. Hidden simple wiring, and high-speed turbo cooling fan, keep the printing safer.

LONGER FDM 3D Printer LK4 PRO (8).jpg
New Aluminum Frame Design


Stylish novel appearance, exclusive design with sturdy new frame, make this printer extremely fashion and durable, better printing quality. And this is semi-assembly with operation manual, easy to set up.

LK4 PRO Assembly Video
LK4 PRO Unobox Reviewing By The 3D Print General


Florian Gehrke (All3DP)

The Longer LK4 Pro is a leggy new budget 3D printer with a fantastic interface.

Participating in a new and silly tradition of designating mildly upgraded 3D printers as “Pro”, the Longer LK4 Pro is, unsurprisingly, an evolution of the LK4 that came before it.


This is a remarkable printer for someone that's looking for a low-cost, entry-level machine with plenty of room to grow. Longer provides full access to the source-code (a huge plus if you want to make your own modifications) and designs. There's also a large community that can help with troubleshooting and mods. Support from the seller (on Amazon) has been top-notch. I'm really impressed with this machine.

Michael Bird

The Longer LK4 Pro is an excellent beginner printer. At under £180, it is a contender for the Ender 3. With the addition of the touchscreen and its TMC stepper drivers, it’s a great buy! 

Model Comparison
Longer LK4 PRO 3D Printer.jpg
LONGER LK4 3D Printer.jpg
Printed Volume
Printing Material
Touch Screen
4.3 inch
2.8 inch
Temper Glass