The QIDI Plus4 is an enclosed CoreXY FDM 3D printer with a large print volume of 305×305×280 mm, an actively heated chamber up to 65°C, and a high-temperature nozzle up to 370°C. This positions it between desktop and industrial solutions – ideal for engineers, product designers, small manufacturing workshops, makerspaces, and advanced hobbyists who want reliable printing with technical materials such as ABS, ASA, PC, PA, and carbon/glass fiber composite filaments.
With its fully enclosed chassis, active chamber heating, and sturdy steel construction, the Plus4 is designed for long duty cycles and consistent quality—exactly what print farms and prototyping departments need. In independent reviews, the printer is often described as “entry-level industrial” – easy enough for beginners, but with capabilities that satisfy demanding professionals.
The QIDI Plus4 uses FDM/FFF (Fused Deposition Modeling) technology in a CoreXY configuration. This means that the print head moves quickly and smoothly along the XY plane, while the platform moves only along the Z-axis, minimizing inertial forces and vibrations. The result is a smoother surface and higher accuracy at high speeds compared to classic Cartesian machines.
The minimum layer thickness is 0.05 mm (50 μm) and the maximum is up to about 0.4 mm, allowing for both fine details and rougher but very fast prototypes. Typical dimensional accuracy is in the range of 50–200 μm according to commercial and review sources.
The hot end is an all-metal bimetal hotend with a power of about 80 W and a maximum temperature of 370°C, which opens the door to engineering polymers and composites – PA, PC, ABS/ASA, PPA-CF, PPS-CF, etc. The standard nozzle is 0.4 mm, and 0.2/0.6/0.8 mm are available as options for fine details or thicker layers.
The camera is actively heated to 65°C with a circulation fan and activated carbon filter. This stabilizes the temperature around the model, reduces warping and cracking in materials such as ABS, ASA, PC, and reinforced nylons, while also limiting dust particles and odors.
Plus4 is designed for high performance. The officially declared maximum print speed is up to 600 mm/sec with acceleration up to 20,000 mm/sec², supported by Klipper firmware with activated input shaping to limit ringing effects. In practice, this allows for a significant reduction in printing time while maintaining very good detail – especially useful for serial printing of repetitive parts.
The working volume of 305×305×280 mm is large enough for entire helmets, complex figures, functional prototypes, and even small series of details placed on a single platform. The printing platform is a double-sided textured PEI plate, which provides good adhesion when heated and easy removal of the finished model when cooled.
The leveling system is fully automatic (“hands-free”), combining sensors and Klipper macros to create an accurate bed mesh map. This makes the first layer reliable even for beginners and reduces the need for manual adjustment of screws.
The firmware is Klipper v0.12 with a clean and modern UI, controlled by a 5-inch 800×480 touchscreen. Although some reviews note a slightly “slow” interface when tapping faster, the general opinion is that navigation is logical and easy to get used to.
Plus4 has 32 GB of built-in eMMC storage, a USB port for external flash memory, as well as Wi-Fi and Ethernet for network printing and remote monitoring. The built-in 1080p camera allows for time-lapse and print monitoring through the software.
The officially recommended software is QIDI Studio – a modified version of Bambu Studio/PrusaSlicer, optimized for all QIDI models. It is available for Windows, macOS, and Linux, and offers profiles for the main materials and for Plus4 out of the box.
For advanced users, the printer is also compatible with Orca Slicer, as well as popular software such as Cura and PrusaSlicer, providing flexibility when integrating into existing workflows.
QIDI Studio (and other supported slicers) work with the most common 3D file formats – STL, OBJ, 3MF, STEP, AMF – generating standard G-code for the printer. This facilitates the import of models from CAD systems as well as those downloaded from online libraries.
The QIDI ecosystem offers a wide range of engineering and composite filaments – PLA, PETG, TPU, ABS, ASA, PC, PA, UltraPA (PPA), carbon/glass filaments, etc., tested specifically for Plus4. This does not exclude the use of third-party materials, but it does ensure that stable results are achieved more quickly with the official profiles.
For advanced features such as multi-color printing, the printer is compatible with the external QIDI Box module, which feeds multiple filaments to a single hotend.
The QIDI Plus4 has a closed body with a metal chassis and plastic panels, which provides good thermal insulation and solid mechanical stability. The printer’s dimensions are 505×487×550 mm, and its net weight is about 27 kg, so it needs to be placed on a stable surface.
XY movement is achieved through CoreXY kinematics with automatic belt tensioning and 10 mm hardened hollow steel shafts, while Z movement is achieved through two independent stepper motors and linear guides. This significantly reduces platform twisting and improves the quality of the first layer, especially with larger models.
The 5-inch 800×480 touchscreen is conveniently located at the top of the housing, with a clean menu and quick access to key functions – print start, calibrations, temperature and speed settings, camera control, etc.
The printer offers several convenient interfaces—USB, Ethernet, and Wi-Fi—and the built-in handles make it easy to move (despite its heavy weight). The front door and glass top cover provide easy access to the camera for filament replacement, inspection, and cleaning.
Engineering prototyping and functional parts. Thanks to the high temperature of the nozzle and heated chamber, Plus4 is excellent for printing ABS, ASA, PC, and nylon composites for prototypes of housings, technical details, mounting fixtures, etc., where dimensional stability is critical.
Small-batch production. The large volume and high speeds make the printer suitable for short runs of repeatable parts—e.g., fasteners, custom brackets, jigs, and fixtures for manufacturing—with very good dimensional repeatability.
Cosplay, props, and large models. Models such as full-size helmets, masks, and figurines can be printed in one piece or in a small number of segments, thanks to the 305×305×280 mm volume and the PEI platform, which holds large prints without peeling.
Education and laboratories. The enclosed housing, air filtration, and stable printing with engineering materials make the Plus4 a good choice for university and R&D laboratories that want to teach students about real industrial materials.
Scenarios from the user community. On Reddit and other communities, Plus4 owners often share successful projects with ASA-CF, PPS-CF, and other difficult-to-print composites, as well as 100+ hour prints without serious problems, provided good maintenance and calibration.
Limitations and notable features. The printer comes with only one extruder; multi-color printing requires a QIDI Box. The interface sometimes responds slowly when scrolling through menus quickly, and the machine itself is heavy and not convenient for frequent relocation. User forums also discuss topics such as X-axis maintenance and lubrication of guides to prevent wear or jamming—it is good practice to follow the manufacturer’s maintenance recommendations and use high-quality lubricants.
The following are recommended as general best practices for Plus4 (and for any high-temperature 3D printer):
The data below is summarized from QIDI’s official specifications and independent technical sheets.
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