🗓 Released Dec 1, 2025
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Cycle Advice
BuyFirst-generation product — recently released, still early days
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Deals Advice
neutralNo upcoming deals on the radar
$1,049Starting Price
390×390×340 mmBuild Volume
800 mm/sMax Speed
EnclosedEnclosure
⏰Buy now or wait?
📅Deals Calendar
Dec 25
Mar 26
Jun 26
Aug 26
Dec 26
Good deal — Prime Day 2026 — first Prime Day for the Max4; Qidi typically offers 15–25% off.
Great deal — Black Friday 2026 — the best annual window for Qidi discounts.
Upcoming sale windows — Prime Day & Black Friday deals (hover for details)
📊Printer Specs
TypeFDM
TierProfessional
MotionCoreXY
Build Volume390 × 390 × 340 mm
Max Speed800 mm/s
Multicolor✅ 4 slots
Enclosure✅ Yes
Auto Calibration✅ Yes
Open Source❌ No
Supported Materials
PLAEasiest to print, great for everyday parts — no enclosure needed
PETGTougher and slightly flexible — good for functional parts, moisture-resistant
ABSHeat and impact resistant — needs enclosure to avoid warping
ASALike ABS but UV-stable — good for outdoor parts, needs enclosure
TPUFlexible and rubber-like — great for phone cases, gaskets, wheels
PANylon — strong and wear-resistant, absorbs moisture, needs dry storage
PA-CFCarbon-fibre nylon — very stiff and lightweight, abrasive to standard nozzles
PCPolycarbonate — extremely tough and heat-resistant, challenging to print
PPS-CFCarbon-fibre PPS — extreme temperature and chemical resistance
💡About the Qidi Tech Max4
Who is it for?Professional makers and small studios who need the maximum enclosed build volume in Qidi's lineup for large engineering parts, architectural models, or batch production — at a price point below the Bambu H2S.
Key strengths
- 390×390×340 mm — Qidi's largest build volume
The Max4 offers the largest build volume in Qidi's lineup — enabling large functional parts, architectural models, and production batch runs that exceed Plus4 capacity.
- Closed-loop XY motion system
The Max4's closed-loop XY adds positional feedback for improved accuracy at high speeds — a differentiating feature at this price tier that reduces dimensional errors on large prints.
- Active 65°C chamber heating at scale
Qidi's proven active chamber heating technology scaled to a 390×390 mm bed — critical for consistent ABS, ASA, PA-CF, and PPS-CF results across the full build plate.
The Qidi Tech Max4, debuted at Formnext November 2025, is Qidi's largest printer to date. Its 390×390×340 mm enclosed build volume, active 65°C chamber heating, and closed-loop XY motion system position it as Qidi's flagship large-format professional printer. It is compatible with the Qidi Box multicolor system for up to 4-color printing.
❓FAQs
Max4 vs Plus4 — which Qidi printer should I buy?
The Plus4 ($699) offers a 305×305×280 mm build volume at a significantly lower price. The Max4 provides a 390×390×340 mm build volume with closed-loop XY motion and is Qidi's flagship professional tier. If you regularly print parts that exceed 300×300 mm, the Max4 justifies its higher price. For most users, the Plus4 is the better value.
Max4 vs Bambu H2S — which large-format professional printer wins?
The Bambu H2S ($999–1,299) has a 340×320×340 mm build volume at 1000 mm/s with Bambu's polished ecosystem and AMS 2 Pro multicolor. The Max4 offers a larger 390×390×340 mm build volume with closed-loop XY and Qidi's active chamber heating at a potentially lower price — but with a less mature software ecosystem. If ecosystem quality, speed, and community matter, the H2S. If maximum build volume is the priority, the Max4.
What is closed-loop XY motion and why does it matter on the Max4?
Closed-loop XY uses encoder feedback to verify the actual position of the print head, correcting any deviations caused by missed steps, resonance, or mechanical compliance. On a printer as large as the Max4 — where long travel distances amplify small positioning errors — closed-loop motion is a meaningful quality improvement over standard open-loop stepper-based CoreXY systems. The result is better dimensional accuracy on large prints at high speeds.