Longer LK5 Pro

The Longer LK5 Pro is an FDM 3D printer from Longer with a 300 x 300 x 400 mm build volume.

Calibration

Calibrating the Longer LK5 Pro is essential for achieving optimal print quality and reliability. Below is a step-by-step guide to calibrate the printer, including detailed explanations of each step and engineering insights.

• Level the Build Plate

Process: Begin by ensuring the printer is on a flat, stable surface. Use the BLTouch auto-leveling sensor to measure the bed’s flatness. Access the printer’s menu and navigate to the "Leveling" section.

Common defects

• Hardware defects and mechanical weaknesses

Symptom: Users have reported inconsistent extrusion and layer shifting during high-speed prints.

Cause: The dual-gear extruder system can slip under high-torque conditions, especially with flexible filaments. Additionally, the delta-style kinematics may experience misalignment if the diagonal rods are not perfectly tensioned.

Solution: Replace the extruder gears with hardened steel versions for better grip.

What it is used for

The Longer LK5 Pro excels in scenarios requiring large build volumes and moderate print speeds. It is ideal for prototyping, educational institutions, and hobbyists who need a reliable printer for everyday use. The printer’s delta kinematics make it suitable for applications like:.