QIDI Max4

Fifty-two litres behind a driven 65 °C chamber, with a 370 °C nozzle and a 390 × 390 mm bed that QIDI has gone out of its way to make heat evenly — the marketing leads on bed uniformity, which on a plate this size is the difference between a flat part and a banana. It is the largest actively heated volume in this catalogue: the Creality K2 Plus and Anycubic Kobra S1 Max are both 350 mm cubes, and Bambu's H2S is 340 mm. A 2 mm-lead Z screw with an anti-backlash nut addresses the Z-wobble that shows up as banding on tall prints. Against the K2 Plus it costs slightly less for more volume and a hotter nozzle; against a Bambu H2S it is a fifth cheaper with 20% more room. What QIDI does not have is either company's software, ecosystem or support depth.

Approx. price: ~$1,049
Build volume: 51.7 L
Per litre: $20
True multi-material price: ~$1,199

Real speed ceiling

500 mm/s

40 mm³/s ÷ (0.4 mm × 0.2 mm) = 500 mm/s. The Max4 is advertised at 600 mm/s, so the hotend can feed 83% of the headline figure. An estimate for a straight line at the hotend’s rated flow — real prints are slower again.

LAN-only modeKlipper firmware

Best forThe largest engineering-material parts that still need a heated chamber to come out straight.

Specifications

Build volume: 390 × 390 × 340 mm
Volume: 51.7 L
Motion: CoreXY
Max speed: 600 mm/s
Acceleration: 20,000 mm/s²
Max flow: 40 mm³/s
Hotend max temp: 370 °C
Bed max temp: 120 °C
Enclosure: Heated chamber to 65 °C
Extruder: direct drive
Auto level: strain-gauge
Hardened nozzle: Yes, as standard
Input shaping: Yes

Materials, control and build

Multi-material: QIDI Box, 4 slots
True multi-material price: ~$1,199 (+~$150)
Firmware: Klipper
LAN-only mode: Yes
Cloud: Optional
Camera: Yes
Assembly: Pre-assembled

Features

390 × 390 × 340 mm — 51.7 litres, the largest heated chamber here
Published 40 mm³/s flow rate and a 370 °C nozzle
Chamber driven to 65 °C, bed to 120 °C
2 mm-lead Z screw with an anti-backlash nut
AI camera and QIDI Box multi-colour compatibility

What it does well

Largest actively heated build volume in this catalogue, beating the K2 Plus and H2S on room
Publishes 40 mm³/s, so its throughput can be compared rather than assumed
370 °C nozzle and 120 °C bed across 51.7 litres covers PC and nylon at size
Anti-backlash Z screw is a direct answer to banding on tall prints
Cheaper than the Bambu H2S with 20% more volume

Where it gives ground

QIDI's ecosystem, slicer and support are all behind Bambu's and Creality's
QIDI Box adds $199 and lags AMS and CFS in development
A machine this size needs dedicated space and a considered power supply
65 °C chamber matches rather than beats the cheaper Q2 and Plus5

The points above are read off published specifications, not from owner reports.

What owners report

No owner discussion has been collected for the QIDI Max4 yet. Everything on this page comes from the manufacturer’s published specifications and the sources listed under how we compare. We would rather say so than write sentiment we have not read.