🗓 Released Dec 1, 2025
🔁
Cycle Advice
BuyFirst-generation product — recently released, still early days
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Deals Advice
neutralNo upcoming deals on the radar
⏰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
PLAPETGABSASATPUPAPA-CFPCPPS-CF
💡About the Qidi Tech Max4
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.
- 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.
🎯Who is this 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.
❓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.