QIDI Max4: Large-Format High-Temperature Multi-Material 3D Printer

# QIDI Max4

Overview

The QIDI Max4 is a large-format enclosed CoreXY 3D printer built for engineering materials, tooling, functional prototypes, and small-batch production. Its 390 × 390 × 340 mm build volume gives it substantially more XY capacity than most desktop engineering printers while retaining an actively heated enclosure.

QIDI combines that build space with a 370°C hotend, 120°C heated bed, and 65°C independent chamber heating. The motion system is rated for up to 800 mm/s toolhead speed, 30,000 mm/s² acceleration, and 40 mm³/s maximum hotend flow.

The Max4 also uses FOC closed-loop stepper motors, a high-hardness X-axis linear rail, 12 mm Y-axis shafts, independent Z motors with 2 mm lead screws, load-cell automatic leveling, a 1080p camera with AI failure detection, three-stage air filtration, and optional QIDI Box multi-color support.

For current specifications and pricing, see the official QIDI Max4 page and QIDI Max4 technical specifications. For broader buying context, see Best 3D Printers for Carbon-Fiber Materials in 2026 and Best 3D Printers for Small Business & Prototyping in 2026.

Key Strengths

• 390 × 390 × 340 mm enclosed CoreXY build volume
• 800 mm/s toolhead speed and 30,000 mm/s² acceleration
• 40 mm³/s published hotend-flow ceiling
• 370°C hotend / 120°C bed / 65°C active chamber
• Hardened direct-drive extrusion and bimetal nozzle
• FOC closed-loop motion with linear-rail X axis
• Load-cell automatic leveling
• 1080p AI camera and three-stage filtration
• Dual-band Wi-Fi, Ethernet, USB, and 32 GB eMMC
• QIDI Studio, OrcaSlicer, and PrusaSlicer support
• Optional QIDI Box with four channels per unit and up to 16 total

QIDI Max4 Best For

1. Large engineering prototypes
2. PA, PC, ABS, and ASA parts
3. Carbon- and glass-fiber composites
4. PPS-CF-class high-temperature printing
5. Tooling, jigs, and fixtures
6. Automotive and robotics prototypes
7. Large functional end-use parts
8. Small-batch production
9. Research and product-development labs
10. Users comparing high-temperature desktop CoreXY printers

QIDI Max4 Technical Specifications

Speed note: 800 mm/s is the maximum toolhead-speed specification. Real print speed depends on filament, geometry, nozzle diameter, acceleration, cooling, and volumetric-flow demand.

Large-Format Engineering Printing

The 390 × 390 × 340 mm build volume suits large housings, automotive and robotics prototypes, workshop fixtures, jigs, composite brackets, and production batches.

Large engineering parts benefit from chamber control because shrinkage accumulates across longer dimensions. The Max4's 65°C chamber is therefore more meaningful than hotend temperature alone on a 390 mm platform.

At 40 kg and 558 × 578 × 612 mm, the printer needs a stable bench and adequate service clearance.

370°C Hotend, 120°C Bed, and 65°C Chamber

The Max4 is designed around high-temperature materials.

Its thermal system provides:

• 370°C hotend
• 120°C heated bed
• 65°C independently heated chamber

That combination supports common materials such as PLA and PETG while giving much better thermal control for ABS, ASA, PA, PC, PPS-CF, and reinforced engineering polymers.

A heated chamber helps reduce temperature gradients, warping, and internal stress in large parts. It does not remove the need for correct material drying, build-surface preparation, nozzle selection, or validated slicer profiles.

The printer's current FAQ explicitly identifies PPS-CF among its supported engineering materials.

For an example of the thermal demands associated with PPS-CF, see the indexed Bambu Lab PPS-CF. Material settings are brand-specific, so use the filament manufacturer's profile rather than assuming one PPS-CF recipe works for every formulation.

Engineering and Fiber-Reinforced Materials

QIDI lists PLA, PETG, ABS, ASA, TPU, PA, PC, carbon- and glass-fiber-reinforced polymers, while the Max4 FAQ specifically names PPS-CF.

The hardened dual-drive gears, bimetal nozzle, 370°C hotend, and heated chamber make the printer well suited to abrasive engineering materials, but filament drying, chamber temperature, nozzle wear, and layer adhesion still require material-specific setup.

TPU and Chamber Use

The Max4 supports TPU, although QIDI notes that materials softer than about 85A may show reduced print quality. High chamber temperature can also soften filament before the melt zone, so chamber settings should stay below the material's softening range.

The optional Polar Cooler helps cool the extruder and feed path during heated-chamber use; it is not standard equipment.

Closed-Loop Motion and Flow

QIDI publishes 800 mm/s maximum toolhead speed, 30,000 mm/s² acceleration, and 40 mm³/s maximum hotend flow. FOC closed-loop steppers, 1.5GT belts, and the X-axis linear rail support the motion system.

The flow figure is the more useful throughput limit: maximum toolhead speed does not mean every material can be extruded at that rate.

Z Axis and Automatic Leveling

The Max4 uses two independent Z motors, 2 mm lead screws, anti-backlash hardware, and four 12 mm shafts. A load cell integrated into the hotend handles hands-free automatic leveling over the large dual-sided textured PEI plate.

The rigid Z system helps large, tall prints, but plate cleanliness and material-specific adhesion settings still matter.

AI Camera and Air Filtration

The Max4 includes an up-to-1080p camera with timelapse and AI failure detection. Filtration combines a G3 pre-filter, H12 HEPA stage, and coconut-shell activated carbon.

Filtration can reduce particulates and odors inside the printer, but appropriate workspace ventilation is still important for materials that emit fumes or ultrafine particles.

QIDI Box Multi-Color and Multi-Material Printing

The standard Max4 is compatible with the optional QIDI Box.

One box provides four filament slots. Up to four boxes can be connected with the required expansion hardware for as many as 16 filament channels.

The official QIDI Box adds hardened dual feed gears, automatic spool relay, runout/clog/tangle monitoring, NFC recognition for compatible QIDI spools, sealed storage, temperature/humidity monitoring, and drying while printing up to 65°C.

The standard Max4 does not include QIDI Box unless purchased as a Combo or bundle.

QIDI Box Material Limits

The QIDI Box material list is not identical to the Max4 printer's material list.

QIDI lists Box support for many rigid materials and selected composites, but generic TPU, TPU 95A, TPE, damp PVA/BVOH, and QIDI PAHT-CF are not listed as Box-compatible.

That distinction matters: the Max4 can print TPU, but TPU 95A should not automatically be routed through QIDI Box. Cardboard spools also require an appropriate adapter.

Connectivity and Software

The Max4 supports 2.4/5 GHz Wi-Fi, Ethernet, USB, and 32 GB eMMC storage. QIDI Studio is the primary slicer, while QIDI also lists OrcaSlicer and PrusaSlicer compatibility.

QIDI Cloud and mobile/PC control are software services rather than physical connection types.

Comparison Table: Large High-Temperature CoreXY Printers

The Max4 prioritizes large enclosed volume and high-temperature single-nozzle material capability. H2D and XL+ place more emphasis on independent material paths, while K2 Plus competes closely on large enclosed engineering use.

QIDI Max4 vs QIDI Plus4

The QIDI Max4 vs QIDI Plus4 comparison is the clearest same-brand decision.

The Plus4 provides a 305 × 305 × 280 mm build volume, 600 mm/s maximum toolhead speed, 20,000 mm/s² acceleration, 370°C hotend, 120°C bed, and 65°C active chamber heating.

Max4 expands that to 390 × 390 × 340 mm, 800 mm/s maximum toolhead speed, 30,000 mm/s² acceleration, 40 mm³/s published flow, dual-band Wi-Fi, and the newer FOC closed-loop motion platform.

Both support QIDI Box.

Choose Plus4 when the smaller build volume is sufficient and lower purchase cost matters. Choose Max4 when large jigs, housings, production batches, or 390 mm-class engineering parts justify the larger footprint.

QIDI Max4 vs Creality K2 Plus

The QIDI Max4 vs Creality K2 Plus comparison is one of the closest large engineering-printer matchups.

The indexed Creality K2 Plus provides:

• 350 × 350 × 350 mm build volume
• 600 mm/s maximum print speed
• 30,000 mm/s² maximum acceleration
• 350°C nozzle
• 120°C bed
• 60°C actively heated chamber
• CFS expansion to as many as 16 colors

Max4 provides 40 mm more XY build area on each axis, a 370°C hotend, 65°C chamber, 800 mm/s maximum toolhead speed, and a QIDI engineering-material workflow.

K2 Plus is slightly taller at 350 mm Z and benefits from Creality's CFS ecosystem and broad retail/service presence.

Choose Max4 for maximum XY size, higher thermal ceiling, PPS-CF-oriented printing, and QIDI Box integration. Choose K2 Plus when Creality's ecosystem, 350 mm cubic proportions, and CFS workflow are stronger priorities.

QIDI Max4 vs Bambu Lab H2D

The QIDI Max4 vs Bambu Lab H2D comparison is large single-nozzle engineering capacity versus advanced dual-nozzle automation.

The indexed Bambu Lab H2D provides:

• 325 × 320 × 325 mm single-nozzle build volume
• 300 × 320 × 325 mm shared dual-nozzle build volume
• Up to 350 × 320 × 325 mm total accessible space across both nozzles
• 1,000 mm/s maximum toolhead speed
• 350°C hardened-steel hotends
• 120°C bed
• 65°C active chamber
• 40 mm³/s standard-hotend flow
• Dual-nozzle plus AMS workflows

Max4 has substantially more single-nozzle XY area, a hotter 370°C hotend, and a lower entry price. H2D counters with two independently controlled nozzles and the Bambu Studio/AMS ecosystem.

Choose Max4 for build area and thermal headroom. Choose H2D for independent dual-nozzle support materials and deeper automation.

QIDI Max4 vs Prusa XL+

The QIDI Max4 vs Prusa XL+ comparison is enclosed high-temperature processing versus independent-tool multi-material printing.

The indexed Prusa XL+ provides a 360 × 360 × 360 mm build volume and supports up to five independent toolheads.

XL+ is especially strong for soluble supports, different nozzle sizes, low-purge multi-material work, and rigid/flexible combinations.

Max4 offers more XY area, a 370°C hotend, and 65°C active chamber.

Choose XL+ for independent material paths and low purge waste. Choose Max4 for high-temperature chamber control, reinforced polymers, and large enclosed parts.

Which QIDI Max4 Alternative Fits Best?

• QIDI Plus4: best same-brand alternative when 305 × 305 × 280 mm is enough.
• Creality K2 Plus: best large enclosed alternative for buyers already invested in CFS and Creality.
• Bambu Lab H2D: best premium alternative for dual-nozzle automation and the AMS ecosystem.
• Prusa XL+: best alternative for independent toolheads and very low-purge multi-material printing.
• Prusa CORE One+: best compact alternative when repairability, a smaller footprint, and an actively controlled chamber are more important than 390 mm capacity.
• QIDI Max4: strongest fit when large XY volume, 370°C processing, 65°C chamber heating, and QIDI Box expansion need to coexist.

QIDI Max4 Price and Availability

The QIDI Max4 currently starts from US$1,049 in USA through QIDI’s official store. That is approximately €898 in Europe, £768 in the UK, C$1,447 in Canada, A$1,476 in Australia, ₹100,435 in India, and AED 3,853 in the UAE. QIDI also operates regional stores, and the printer may be available through QIDI-authorized resellers and major marketplace channels, depending on the country.

Actual pricing can differ by region due to VAT or local taxes, shipping, import duties, exchange rates, and promotional discounts.

Limitations and Practical Considerations

• The 390 × 390 × 340 mm volume requires a large, rigid bench.
• Net printer weight is 40 kg.
• 800 mm/s is maximum toolhead speed, not a universal printing speed.
• 40 mm³/s is the published hotend-flow ceiling; material-specific profiles may use less.
• Chamber temperature should be matched to filament softening behavior.
• Polar Cooler is optional.
• Standard Max4 does not include QIDI Box unless sold as a Combo/bundle.
• QIDI Box does not support every filament the Max4 itself can print.
• Generic TPU and TPU 95A are not listed as QIDI Box-compatible feed materials.
• QIDI Box drying tops out at 65°C; follow the specific filament manufacturer's drying requirements.
• Cardboard spools need an appropriate adapter for QIDI Box.
• Tangle detection is tied to QIDI Box rather than the base printer's standard runout sensor.
• The heated enclosure improves engineering-material processing but does not remove the need for filament drying or ventilation.
• QIDI does not currently publish a clear official minimum layer-height figure for Max4.

Frequently Asked Questions