Renkforce Cube One

The Renkforce Cube One is an FDM 3D printer from Renkforce with a 80 x 80 x 80 mm build volume.

Specifications

The Renkforce Cube One is an ultra-compact, entry-level FDM (Fused Deposition Modeling) 3D printer. Marketed as an in-house brand by Conrad Electronic, Germany, it was designed with a focus on portability, ease of use, and child-safe operation. With a launch price under 200 EUR, it serves as an affordable gateway to 3D printing for schools, STEM workshops, and hobbyist beginners.

Build Volume: The machine features a tiny build envelope of 80 mm × 80 mm × 80 mm. This cubic build space is one of the smallest on the market, limiting the printer's suitability for larger structural assemblies.

Calibration

Achieving reliable results on the Renkforce Cube One requires executing these key maintenance and calibration procedures:

• App-Guided Bed Tramming (Leveling)

Since the printer lacks a physical auto-leveling sensor, the bed's parallelism must be set manually using the four adjustment hex screws beneath the build plate.

• Step: Turn on the printer and connect the companion mobile app. Navigate to the bed leveling utility.

Common defects

• Hardware defects and mechanical weaknesses
• Poor Bed Adhesion from Lack of Heated Bed:
• Symptoms: Prints detach from the bed mid-print, resulting in spaghetti-like filament bundles.
• Cause: PLA shrinks slightly as it cools, and without a heated bed to maintain bonding temperature, parts with large footprints tend to warp and detach.
• Solution: Always print with a 5-10 mm brim and apply glue stick to the build plate.
• PTFE-Lined Hotend Jamming:.

What it is used for

Best use-cases:

• Introduction to 3D Printing for Children: The low operating voltages, lack of a heated bed, and simple app interface make it a safe option for classrooms.
• Small Figures and Toys: Well-suited for printing small models and miniatures under 8 cm in size.