Longer Cube2

The Longer Cube2 is an FDM 3D printer from Longer with a 120 x 140 x 105 mm build volume.

Specifications

The Longer Cube2 is an ultra-compact FDM (Fused Deposition Modeling) 3D printer. It is specifically designed for children, STEM classrooms, and beginners who require a highly safe, plug-and-play experience. Because it is built as a budget-oriented, consumer-appliance-style machine, it features several critical design limitations that affect its mechanical capability and output quality.

• Hotend (Hotend): The printer uses a Bowden-style extrusion system. The stepper motor driving the filament is fixed inside the printer base, pushing filament through a long PTFE tube to the moving printhead.

Calibration

Achieving consistent results on a compact, non-heated-bed printer like the Longer Cube2 requires careful calibration. Use the following guide to optimize settings:

• Prep and Cleaning of the Cold Magnetic Plate:

Since the bed cannot heat up, adhesion relies entirely on mechanical grip and surface cleanliness. Wipe the magnetic print surface with isopropyl alcohol (IPA) before every print to remove oils. For wider parts, apply a thin layer of PVA/PVP glue stick or blue painters' tape.

Common defects

• Hardware defects and mechanical weaknesses
• Part Warping and Bed Detachment:
• Symptoms: The corners of printed parts curl upward during printing, or the part detaches entirely, causing a filament blob around the nozzle.
• Cause: Thermal shrinkage of the cooling polymer on the non-heated bed.
• Solution: Always use an 8 mm brim in your slicer, apply a glue stick to the bed, and avoid drafts in the printing area.
• Cracked Extruder Tensioner Arm:.

What it is used for

Best use-cases:

• STEM Education and Schools: The enclosed mechanics, silent operation, and cold bed make this printer highly safe and suitable for children and educational labs.
• Small PLA Figures and Toys: Ideal for small, low-stress items like keychains, miniature puzzles, and prototype shapes.