QIDI Plus4

# QIDI Plus4

Overview

QIDI Plus4 is an enclosed CoreXY 3D printer aimed at engineering prototypes, tooling, functional parts, and small-batch production. Its 305 × 305 × 280 mm build volume provides more room than typical 250–260 mm desktop platforms while keeping the machine within a workshop-friendly footprint.

The main reason to consider the Plus4 is its thermal capability. QIDI specifies a 370°C hotend, 120°C heated bed, and 65°C independently heated chamber, giving the printer useful headroom for ABS, ASA, PC, PA, carbon- and glass-fiber-reinforced polymers, and higher-temperature materials such as PPA-CF/GF and PPS-CF.

QIDI also publishes a 600 mm/s maximum toolhead speed and acceleration up to 20,000 mm/s². That 600 mm/s figure is a motion-system limit, not a universal maximum printing speed, so this listing does not use it as `maxPrintSpeedMmS`.

The current Plus4 is compatible with the QIDI BOX multi-filament system. QIDI now sells Plus4 Combo configurations with the BOX included, and the current BOX ecosystem supports expansion to as many as 16 colors with additional boxes and accessories.

For current pricing and specifications, see the official QIDI Plus4 product page, the official Plus4 technical specifications, and the QIDI Plus4 documentation center.

Key Strengths

• 305 × 305 × 280 mm build volume
• 370°C maximum hotend temperature
• 120°C maximum heated-bed temperature
• 65°C independently heated chamber
• 400 W chamber-heating system
• CoreXY motion
• 600 mm/s maximum toolhead speed
• Up to 20,000 mm/s² acceleration
• 0.4 mm bimetal nozzle
• Hardened-steel direct-drive extruder gears
• 0.2, 0.6, and 0.8 mm optional nozzles
• 9 mm 1.5GT belts
• Dual independent Z lead-screw motors
• 10 mm X/Y linear shafts
• 6 mm aluminum bed structure
• Hands-free automatic leveling
• Input Shaping
• Filament runout and tangle detection
• Activated-carbon chamber filtration
• Up to 1080p camera with timelapse
• 32 GB eMMC plus USB storage
• Wi-Fi, Ethernet, and USB connectivity
• QIDI BOX multi-color compatibility
• Open-source Klipper-based control system

Best For

1. Engineering prototypes
2. ABS and ASA parts
3. Nylon and polycarbonate workflows
4. Carbon- and glass-fiber-reinforced parts
5. PPA-CF/GF and PPS-CF applications
6. Jigs and fixtures
7. Large functional components
8. Small-batch production

Technical Specifications

65°C Independent Chamber Heating

The Plus4 uses QIDI's second-generation active chamber-heating system.

QIDI specifies:

• Up to 65°C chamber temperature
• 400 W dedicated chamber heater
• Air circulation inside the enclosure
• Activated-carbon filtration

This is a meaningful advantage over printers that are enclosed but depend entirely on passive heat from the bed and nozzle.

A warmer, more stable chamber helps reduce thermal gradients in larger engineering parts made from ABS, ASA, PC, PA / Nylon, PA-CF / PA-GF, PPA-CF / PPA-GF, and PPS-CF.

For an indexed material example, Prusament ASA benefits from a controlled, draft-resistant environment on larger parts.

Active chamber heating does not remove the need for material drying, suitable bed preparation, correct part orientation, and material-specific profiles.

370°C Hotend and Reinforced Materials

QIDI specifies a 370°C maximum printhead temperature and a second-generation 80 W hotend.

The stock extrusion system uses a 0.4 mm bimetal nozzle, hardened-steel direct-drive extruder gears, an integrated hotend/nozzle design, and dedicated hotend cooling.

QIDI also offers optional 0.2, 0.6, and 0.8 mm nozzles.

The current product page highlights the upgraded multi-metal nozzle with a hardened tip for fiber-filled materials and identifies PPS-CF as a supported high-temperature example.

For frequent abrasive-material printing, nozzle condition should still be treated as a consumable process variable.

Related indexed materials include Prusament PA11 Carbon Fiber and Prusament PC Blend Carbon Fiber. Their individual temperature, drying, and bed-surface requirements should be checked before use.

Official Material Compatibility

QIDI currently lists common filaments including PLA, PETG, TPU, PVA, and HIPS, plus engineering and high-temperature materials such as ABS, ASA, PC, PA / Nylon, PA-CF/GF, PET-CF/GF, PPA-CF/GF, and PPS-CF.

The broader technical-specification page also describes support for carbon- and glass-fiber-reinforced polymers generally.

This material range is one of the Plus4's strongest selling points, but high nozzle temperature alone is not enough. Moisture-sensitive nylons and PPA compounds require disciplined drying, while large ABS/ASA/PC parts benefit from appropriate chamber settings and adhesion strategy.

For printer comparisons focused specifically on composites, see Best 3D Printers for Carbon-Fiber Materials in 2026.

CoreXY Motion and Large-Part Stability

The Plus4 uses CoreXY kinematics with 9 mm 1.5GT belts.

QIDI also specifies dual independent Z-axis lead-screw motors, 10 mm high-hardness linear shafts, a 6 mm aluminum bed substrate, up to 20,000 mm/s² acceleration, and Input Shaping.

The motion system is rated for 600 mm/s maximum toolhead speed.

Real printing speed is usually lower because it is limited by material flow, layer height, nozzle size, geometry, cooling, and desired finish.

For large engineering parts, thermal stability and consistent extrusion are often more important than reaching the motion system's absolute speed ceiling.

Automatic Leveling and Filament Monitoring

The Plus4 uses hands-free automatic leveling to reduce manual bed-adjustment work.

QIDI also specifies:

• Hall-effect filament runout sensor
• Filament-tangle detection
• Power-loss recovery

These functions are particularly useful for longer engineering jobs where a spool problem or power interruption could otherwise waste many hours of printing.

Automatic calibration still works best alongside a clean build surface, a healthy nozzle, suitable filament, and correct material profiles.

QIDI BOX Multi-Color Expansion

The Plus4 is compatible with the current QIDI BOX automatic filament-management system.

QIDI now sells base Plus4 configurations, Plus4 Combo configurations with QIDI BOX, Plus4-specific BOX upgrade hardware, and expansion kits for larger multi-color arrangements.

The current QIDI BOX supports up to 16 colors when additional QIDI BOX units and the required expansion hardware are used.

The standard Plus4 should therefore be described as QIDI BOX compatible, not as a multi-color printer with the BOX included.

QIDI BOX also provides heated filament storage/drying and automated feeding, which can be useful for moisture-sensitive engineering materials.

The Plus4 remains a single-nozzle printer, however. Color or material changes still require the nozzle to transition between filaments, so multi-color jobs can create purge waste.

For users prioritizing independent nozzles and lower purge waste, the Prusa XL+ uses a different active-toolchanger architecture.

Camera and Remote Monitoring

QIDI specifies a low-framerate camera capable of up to 1080p.

It supports remote visual monitoring and timelapse recording.

The wording matters: "up to 1080p" describes image resolution, not a high-frame-rate 1080p video system.

The camera is best treated as a print-monitoring and timelapse tool rather than a high-speed machine-vision system.

Connectivity and Software

The Plus4 supports:

• 2.4 GHz Wi-Fi
• Ethernet
• USB
• 32 GB eMMC internal storage
• USB 2.0 flash storage

QIDI recommends QIDI Studio and also lists third-party compatibility including OrcaSlicer and PrusaSlicer.

The Plus4 runs a Klipper-based control system and supports networked and local workflows. QIDI also describes wired or wireless operation with remote cloud access or secure LAN-only control.

Activated-Carbon Filtration

The chamber circulation system includes an activated-carbon air filter.

This can reduce odors and some volatile compounds, but it should not be treated as a substitute for appropriate room ventilation.

Materials such as ABS and ASA can produce emissions during printing. Follow the filament manufacturer's safety guidance and local workplace requirements.

Plus4 vs Creality K2 Plus

The Creality K2 Plus is a larger enclosed engineering platform.

Plus4 is attractive when:

• 305 × 305 × 280 mm is sufficient
• 370°C hotend capability matters
• A 65°C chamber is useful
• Lower purchase price is important
• QIDI's Klipper-oriented workflow is preferred

K2 Plus provides a substantially larger build envelope and a different automation/multi-color ecosystem.

Plus4 vs Bambu Lab H2D

The Bambu Lab H2D is another engineering-focused enclosed platform but uses a dual-nozzle architecture and a different automation ecosystem.

The Plus4 emphasizes a 370°C hotend, 65°C active chamber, 305 mm-class build area, engineering and high-temperature materials, QIDI BOX compatibility, and a lower-cost entry into heated-chamber printing.

H2D is the stronger comparison when dual-nozzle workflows and Bambu's automation ecosystem matter more.

Price and Availability

QIDI’s current US store lists the Plus4 at US$649, discounted from its regular US$799 price. Based on current exchange rates, the sale price is approximately €561 in the Eurozone, £480 in the UK, C$901 in Canada, A$917 in Australia, AED 2,384 in the UAE, and ₹61,947 in India.

Limitations and Practical Considerations

• 600 mm/s is maximum toolhead speed, not a universal print-speed specification.
• QIDI does not currently publish one official Plus4 layer-height range in the main technical specification.
• Physical removable-build-plate dimensions are not separately published from printable area.
• The Plus4 remains a single-nozzle printer even when using QIDI BOX.
• Multi-color jobs can create purge waste.
• Engineering nylons and PPA materials require correct drying.
• Active chamber heating does not eliminate warping if material, orientation, or adhesion settings are unsuitable.
• Activated-carbon filtration does not replace appropriate room ventilation.
• The camera is low frame rate even though resolution can reach 1080p.
• QIDI BOX is optional on the base printer and included only in Combo configurations.
• High-temperature material compatibility should always be checked against the exact filament's nozzle, chamber, bed, drying, and annealing requirements.

Callout Section

Recommended use: Choose QIDI Plus4 when you need a 300 mm-class enclosed CoreXY printer with a 65°C independently heated chamber, 370°C hotend, hardened extrusion hardware, and broad engineering-material support at a lower price than many industrial-style high-temperature platforms.

Frequently Asked Questions