Geometeric Graph


Entry Level FDM 3D Printer
Longer Online Store

Printer Description

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  • Build Volume: 220mm(L)*220mm(W)*250mm(H)

  • Layer Thickness: 0.1-0.4mm; Printing Speed: 20-150mm/s

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

  • Filament Diameter: 1.75mm;

  • 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)*402mm(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

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2.8” Colorful Touch Screen


Equipped with self-developed intelligent operating system and colorful touch screen, LK4 3D printer is easily operation, offline printing.

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Build Volumes


Larger build volumes than sla 3d printers and many FDM printers, plus it comes with about 197inches 1.75mm pla filaments, make what you create and imagine into a reality.

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New Aluminum Frame Design


Stylish novel appearance, exclusive design with sturdy new frame, make this printer extremely fashion and durable, better printing quality.

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Resume Printing


The LK4 comes with a state of the art control board which, in the event of an unexpected power outage or surge, will remember the last recorded position of the extruder.

Safety Power Supply


Built-in high quality power supply design, it’s more safe compare to other similar 3D printer in the market, can protect your printer from unexpected power surges.

Fast Heating Hotbed


Upgrade the heating bed, the heating speed is fast (up to 100 ℃ in 4 minutes), strong adhesion, no warpage, improve the print quality

LK4 Assembly Video
LK4 Unobox Reviewing By Just Vlad



I really like this printer for the cost, it is well worth the price for the quality. I feel like Longer 3D has learned from other similar printers and modified it to make certain things a little better. I would definitely recommend this as a first time printer or a nice addition for a small solid printer. I will continue to use this printer for small projects and will update this review over time.


I was looking for a replacement 3D printer as I was getting tired of buying proprietary filament that cost twice as much as others and I happened upon this one. I have to say that my purchase has worked out very well. Setup took some time as you have to put it together yourself, but the video they give you a link to helps out tremendously. It took me about 30 minutes to get it together and set up for printing. Calibration and leveling is super easy as well. It uses just about any filament (pla, abs) and the prints come out great. In fact they are so good that you can't tell it was a 3d print on a majority of the prints. I highly recommend this printer.


There's absolutely no reason not to buy this machine. You can hardly beat the price at around $200. For less than the price of your smart phone, you could print out any of thousands of free models that can be found online. I've had access to a higher dollar machine before and it didn't come close to the print quality or usability of the Longer LK4. I chose this over similar models from other brands because it came with a heated glass bed. The heated bed simply gets clipped in place with binder clips before you plug the cable into it. I use it film side up with no preparation.

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