LONGER LK4 X 3D Printer, Auto Leveling, 0.1mm Accuracy, 180mm/s Speed, 95% Pre-Assembled, Resume Printing, 32-Bit Open Source, 220x220x250mm

Highlights

Easy Assembling & Intelligent Auto Leveling
It is 95% pre-assembled and only needs 6 steps to complete the assembly, reduces operation time and trouble, and quickly starts printing. 
With 16-point exact leveling, the unevenness of the hotbed is automatically compensated, deducting the hassle of manual leveling, and improving printing.

Direct Dual-gear Extruder and Wide Compatibility
Features a direct dual-gear extruder with a 5:1 reduction ratio, it has stronger and more accurate filament control and is compatible with PLA, TPU, ABS, PETG, and Wood. A building size of 220*220*250mm meets routine requirements and offers lower power consumption.

32-Bit Open Source & Ultra Silent Motherboard
A 32-Bit main control chip is outfitted with 4 kits of TMC2208 ultra-silent chipsets, which makes the printing fast and quiet. Also, with open-source firmware, you have more creative freedom.

Strong Adhesion & Simple Removal of PEI Film
The platform is built of premium spring-flexible steel that allows for simple filament adhesion to the print bed without the use of adhesive. And simply removes the printed model by just removing the PEI sheet and slightly bending it.

Resume Printing & Run Out Protection
LONGER LK4 X is equipped with a double resume printing function after filament runs out or power is lost, algorithms record and detect the printing process in real-time, saving both time and filament.

4.3-inch Large Touch Screen 
Come with a 4.3-inch full-color touch screen, which is easy to operate. You can say goodbye to the era of manual knobs and dot-matrix displays.

Manual Belt Tensioners
The X/Y-Axis knob tensioners may easily and timely adjust the belt's tension, and prevent layer shifting, enabling better printing.

Specification