Formnext 2025 in Germany brings another wave of industrial 3D printing launches, and QIDI is using the event to introduce its new flagship system: the QIDI Max4. Positioned as the largest print-size option among consumer-grade enclosed printers, the Max4 aims to tackle a long-standing challenge in this segment: the “difficulty in achieving both large print size and high precision.”
According to QIDI, the Max4 combines a significantly expanded build volume with motion control, thermal management and automation features designed for professional users who want to produce large parts without compromising on detail or reliability.
Large build volume with uniform thermal control
The QIDI Max series has built its reputation on large-format and versatile printing, and the Max4 pushes that further. The system offers a build volume of 390 × 390 × 340 mm, which QIDI states is 55% larger than the previous Max3. This size targets applications such as large industrial components, intricate molds and customized prototypes, where single-piece builds can reduce assembly steps and potential weak points.
To support this envelope, the Max4 uses a 390 × 390 mm heated bed with a full-surface silicone thermal layer and densely distributed heating wires. QIDI highlights this as one of the most uniform heating designs in its class. A high-efficiency insulation cotton layer beneath the bed further stabilizes temperature across the surface. Together, these elements are intended to improve first-layer adhesion and keep large-format prints stable, with reduced risk of warping across the build plate.
High-flow extrusion and controlled printing environment
On the extrusion side, QIDI equips the Max4 with a new high-flow hot-end rated at 40 mm³/s. This is designed to enable significantly faster print speeds, particularly useful when filling a large build volume, and to help reduce overall production cycles for sizable parts.
The nozzle is made from hardened steel, which broadens material compatibility beyond basic filaments. QIDI lists support for standard PLA and ABS, alongside some industrial materials such as abrasive carbon fiber–reinforced nylon. This combination of higher flow and wear-resistant hardware is aimed at users who need throughput and composite capability on one machine.
Thermal control extends beyond the bed and hot-end. The Max4 debuts QIDI’s self-developed Active Toolhead Cooling System, referred to as the “Polar Cooler.” This system directs cooled air directly onto the extruder and filament path to improve heat dissipation and help prevent clogs during demanding jobs.
In parallel, the printer uses a second-generation Active Chamber Heating system that can maintain an internal temperature of up to 65°C with optimized air circulation. QIDI positions this as a key enabler for high-temperature materials, naming ABS, ABS-CF and PC as examples that benefit from a heated environment and stable airflow.
Motion system upgrades for stability and precision
To improve print stability and part quality at speed, the QIDI Max4 introduces a new closed-loop motor system on the XY axes. Instead of running open-loop, the motors work with a closed-loop encoder that monitors errors and compensates for deviations on the fly.
QIDI outlines three main benefits of this approach. First, greater stability: the system aims to prevent step loss and reduce layer misalignment over long or complex jobs. Second, improved accuracy: reduced torque ripple is intended to lower surface artifacts such as visible rippling or cogging. Third, enhanced efficiency: the closed-loop motors are designed to run cooler and quieter at high speeds, which can lessen thermal impact on internal components and contribute to a longer operational lifespan.
Z-axis performance receives similar attention. The Max4 uses 2 mm lead screws combined with an anti-backlash nut to remove vertical play and maintain consistent positioning. This configuration is aimed at smoother Z motion and higher Z-axis accuracy, with the goal of minimizing layer lines and improving surface detail, especially on tall parts that occupy much of the printer’s build height.
Beyond the core motion components, QIDI adds several supporting features: a new auto-leveling sensor, industrial-grade linear rails and custom 1.5GT belts. Together, these elements are intended to deliver smoother, more precise motion control while enhancing the machine’s durability under frequent use.
AI monitoring, interface updates and QIDI BOX integration
On the usability and automation side, the QIDI Max4 introduces an AI recognition system built around a high-performance processor. Using a high-definition camera, the printer continuously monitors the print in real time and analyzes image data alongside print commands. When it detects issues such as “spaghetti” failures or problems in support structures, the system can automatically pause the print and send an alert. This is designed to cut down on wasted material and reduce the need for constant manual supervision on longer jobs.
The user interface has been updated as well. A new large screen and redesigned UI aim to offer smoother fingertip control and a more modern interactive experience, from setup to monitoring.
For multi-color and multi-material workflows, the Max4 can be paired with the QIDI BOX. This accessory extends the printer’s capabilities by supporting up to 16 colors simultaneously and providing filament drying at temperatures up to 65℃. In combination with the printer’s high-temperature chamber and hardened nozzle, this setup is positioned for use cases ranging from multi-color artistic models to engineering-grade composite parts and complex, multi-material objects.
Market positioning, availability and sales plans
With its larger build volume, reinforced motion system, high-flow hotend, chamber heating and AI-driven monitoring, the QIDI Max4 is presented as the new flagship in QIDI’s lineup. The company frames the system as a competitive entry in the large-format enclosed desktop segment, targeting professional users who want higher efficiency, stable performance and an increasingly automated user experience in a single machine.
QIDI states that the Max4 is now available for global pre-order through its official channels.
According to the Qidi official website, BFCM sales will launch today on November 18th, and interested customers can watch for upcoming promotions there.
By combining high-temperature capability, precision-focused motion control and expanded multi-material options via the QIDI BOX, the Max4 positions itself as a large-format platform for both functional and creative work. Its launch at Formnext 2025 underlines QIDI’s intention to grow its role in the professional 3D printing space and to compete more directly in the large-format category.