QIDI Max4 Combo 3D Printer
- 390 x 390 x 340 mm build volume
- 65 C heated chamber, 370 C nozzle
- 800 mm/s max speed, 30,000 mm/s2 acceleration
- 40 mm3/s hotend with hardened steel nozzle
- AI camera detects failures and pauses printing
- QIDI BOX expands to 16-color printing; Polar Cooler sold separately
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A large enclosed printer with a heated chamber, a hardened nozzle and a camera that pauses failed prints. The Polar Cooler is not included, so factor that in if you need it.
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ASIN: B0GF87BKPDModel: Max4 ComboCategory: 3D Printers
Sizes Available
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Overview
QIDI designs the Max4 Combo around a heated chamber and a hardened steel nozzle, so it can run standard plastics and abrasive carbon-fiber-reinforced nylon. Closed-loop motors drive the X and Y axes, and dual Z lead screws support the gantry.
The case for it is capability in one enclosure: large parts, high speeds, industrial materials and automatic failure detection. The limitation is that the Polar Cooler is a separate purchase, and multicolor printing needs the QIDI BOX add-on.
Who it's for
Shops and advanced hobbyists who print molds, fixtures and prototypes in one piece. A casual user printing small PLA models would not use the heated chamber or the large bed.
Pros and cons
- Large build volume
- Hardened steel nozzle
- AI camera detects failures
- Expandable to multi-color
- Polar Cooler sold separately
- Needs QIDI BOX for color
- Weight and footprint not listed
Performance notes
Closed-loop X and Y motors are listed for the high stated speed and acceleration. The heated chamber and the hardened steel nozzle are what let it take industrial and abrasive materials. The AI camera watches for failures such as spaghetti prints and pauses the job.
Specifications
| Brand | R Qidi Technology |
|---|---|
| Model | Max4 Combo |
| Capacity & performance | |
| Build volume | 390 x 390 x 340 mm |
| Max print speed | 800 mm/s |
| Max nozzle temperature | 370 C |
| Flow control | 40 mm3/s, hardened steel nozzle |
| Construction & materials | |
| Multi color | QIDI BOX, up to 16 colors |
| Other details | |
| Bed leveling | Auto-leveling |
| Motion system | Closed-loop X/Y motors, dual Z lead screws |
| Max acceleration | 30,000 mm/s2 |
| Camera | AI camera |
| Enclosure | 65 C |
Frequently asked questions
How do I look after the QIDI Max4 Combo?
The listing gives no maintenance schedule. It does say the AI camera pauses on detected failures and the QIDI BOX pauses when filament runs out.
Does the QIDI Max4 Combo include the Polar Cooler?
No.
Can the QIDI Max4 Combo print carbon fiber nylon?
Yes, the listing says the hardened steel nozzle supports industrial abrasive materials such as carbon-fiber-reinforced nylon.