longer lk2 3d printer：
220 x 220 x 250mm build size, the best entry level machine for novice and professional users.
2.8'' full color touch screen display for more intuitive control, it can be installed on left or right side as user's habit.
Power failure resume printing function ensures continuous printing, easy to print anytime and anywhere.
Filament detection function to prevent problems caused by filament runout.
High printing accuracy with standard 0.4mm diameter nozzle.
Built-in power supply, hidden under the build platform, reduces the risk of electric shock.
Heated print bed is capable of 3D printing the most popular thermoplastics including PLA, ABS, Wood, Carbon Fiber etc.
Q1 : the LCD screen lights up but doesn’t show any icon when the printer is booted or using
Q2: The LCD screen (backlight ) does not light up when the printer is booted or using
Q3: The LCD screen displays “Detected abnormal temperature of the hotbed”, and the left side of the LCD alarms the hotbed“cold”
Q4: The LCD screen displays "Detected abnormal temperature of the hot bed", and the left side of the LCD alarms the hotbed "Hot"
Q5: The LCD screen displays "Detected abnormal temperature of the print head", and the alarm print head is "Cold"
Q6: The LCD screen displays "Detected abnormal temperature of the print head" and warns that the print head is "Hot"
Q7: The LCD screen shows that the print head and hotbed both are "cold" when the printer is booted or during using.
Q8: During the startup or use, the print head or the hotbed automatically heats up, the temperature cannot be controlled, and the temperature does not stop until the power is turned off.
Q9: When setting a target temperature or printing file for the hotbed, but the hotbed (aluminum substrate) is not heated.
Q10:When setting a target temperature or print file for the print head (or nozzle), the print head is not heated.
Q11: The X/Y/Z axis motor doesn’t turn or turn abnormally when leveling or moving the axis operation, the axis movement is not smooth, sometimes it is stuck, sometimes even makes a lot of noise.
Q12: The extruder (feeding motor) does not turn normally , or slip / click / stuck .
Q13: The filament detection switch does not work, no filament can be detected, or always alarms "no materials” while it actually has filament.
Q14: The Z axis of the printer can not move up and down properly , but the z-axis motor can rotate.
Q15: The print head (hotend ) cooling fan doesn’t work when the printer reboots or during printing.
Q16: During the "move head" operation or printing process, Z axis motor does not rotate or rotate abnormally , such as shake /stuck /slip , etc.
- Use Video
- Assemble Video
- Maintenance Guidance
Longer LK2 - 3D Printer - Unbox & Setup
Longer LK2 - 3D Printer- Upgrade & Prints
T3DP Longer 3D LK2 Unbox, Build, Print
Creality Ender 3 vs Longer 3D LK2 Print Comparison
LONGER LK2 3D Printer Assembly Tutorial 480P version
Longer 3D LK2 Unboxing and Build
Adjust the X-axis movement tightness tutorial
Adjust the print platform movement tightness tutorial
Replace the hotend(printhead) method
Replace the teflon tube method
Manual leveling tutorial
The motherboard replacement tutorial
The model cooling fan (4010) replacement tutorial
The hotend cooling fan (3010) replacement tutorial