QIDI
Max 4
A large-format 390³ FDM printer with an active 65°C heated chamber — CoreXY at 800mm/s, engineering and carbon-fiber materials, and up to 16-color printing. A genuine production machine.
A big, heated-chamber printer for engineering materials
The QIDI Max 4 is an enclosed CoreXY FDM printer with a large 390 × 390 × 340 mm build volume and an active chamber that heats to 65°C — so you can print ABS, ASA, PC, nylon and carbon-fiber composites at scale with far less warping. Pair that with a 370°C high-flow hotend, closed-loop XY motors and AI print monitoring, and this is a machine built for real parts, big prints and continuous running — not just desktop toys.
What the Max 4 does well
Huge 390³ build volume
A fully-enclosed 390 × 390 × 340 mm area — among the largest at consumer pricing, for big single parts or many prints at once.
Active 65°C heated chamber
A 2nd-gen chamber heater holds up to 65°C — stable ABS / ASA / PC / nylon / CF prints with much less warping and layer splitting on large parts.
Fast & high-flow hotend
CoreXY up to 800 mm/s, 30,000 mm/s² acceleration; a 370°C, 40 mm³/s high-flow hotend for fast yet solid extrusion.
CoreXY + closed-loop motors
The XY axes use closed-loop motors (encoders) that monitor and correct deviation on the fly — rigid, precise motion that holds up at speed.
Up to 16 colors
Add the QIDI Box for multi-color / multi-material printing up to 16 colors, with filament drying to 65°C right in the feeder.
AI print monitoring
An HD camera with AI failure detection (spaghetti, broken supports) auto-pauses and alerts you on anomalies — peace of mind on long prints.
Where it's not yet optimal
No machine is perfect — here are the trade-offs worth knowing before you buy, so the Max 4 fits your needs.
Big and heavy — needs space & venting
It's a large machine, so it takes up real space and is fairly heavy; you'll want a solid table and airflow. The enclosure cuts odor, but for ABS/ASA you should still ventilate the room.
Multicolor still wastes & slows
Like any single-nozzle multicolor system, color changes create purge waste and longer prints; the QIDI Box is an add-on. If you truly need many colors, weigh the cost and time.
Leans toward experienced users
QIDI Studio (Orca-based) has improved a lot, but its library and community aren't as big as Bambu's; the technical features (heated chamber, CF, closed-loop) pay off most for users who already know their way around printing.
The QIDI Max 4 through my lens
Technical details
Watch the full Max 4 review
I filmed the full hands-on with the Max 4 — speed, heated chamber, engineering materials and print quality. Give it a watch and follow Ariel Studio so you don't miss it.
