The X-Plus 3 is the larger sibling to the Q1 Pro — same 350°C nozzle capability and 60°C active chamber, with a 280×280mm build area instead of 245mm. It’s the most capable consumer machine for PA-CF, PC, and PEEK-adjacent materials at its price point. At $599, it competes directly against the Bambu P2S ($549) on price while offering significantly higher nozzle temperature and active chamber heating — at the cost of Bambu’s software ecosystem.
What It Does Well
350°C nozzle with a 60°C independently heated chamber is the combination that makes engineering material printing reliable. The chamber temperature doesn’t depend on how long the print has been running or how hot the bed is — active heating maintains it. A 270mm tall PA-CF part starts at 60°C chamber temperature on the first layer, not 25°C chamber temperature that slowly rises over two hours.
280×280×270mm is meaningfully larger than the 245mm Q1 Pro cube. For engineers printing large functional assemblies, structural brackets, or full-scale components in engineering materials, the extra 35mm in each axis regularly matters.
Klipper firmware at 600mm/s reduces prototyping time on cheaper materials. Running PLA at 400mm/s to validate geometry before committing to PA-CF at 120mm/s is a practical workflow that the X-Plus 3’s speed range accommodates.
Where It Falls Short
The X-Plus 3 is from 2023 and QIDI’s software ecosystem has continued to lag competitors. OrcaSlicer (third-party) is a better workflow for X-Plus 3 than QIDI’s native slicer for most advanced users. The machine supports it, but the initial profile setup requires community research that Bambu users don’t face.
For true PEEK printing (380–400°C), the 350°C stock hotend is at its limit. QIDI offers a high-temp hotend upgrade, but PEEK printing on the X-Plus 3 is more experimental than on purpose-built high-temperature machines. The Q1 Pro has the same issue.
QIDI’s long-term parts availability and customer service are a known concern. The company has improved, but Bambu’s and Prusa’s supply chains for replacement parts are more established.
Materials
PA-CF: The primary engineering use case. 260–275°C nozzle, 90–95°C bed, 55–60°C chamber. Hardened steel nozzle required. Dry filament 8–12h at 80°C. The active chamber is the reason results on 270mm tall PA-CF parts are reliable where passive enclosures sometimes fail.
PC: 270–280°C nozzle, 115–120°C bed, 55–60°C chamber. The active chamber provides the necessary ambient temperature for large PC parts without the gradual chamber warm-up that passive enclosures require.
ASA: 250–255°C, 100–110°C bed, zero fan, 45°C chamber. The chamber eliminates the draft sensitivity that makes ASA inconsistent on open-frame machines.
PETG-CF: 245–255°C, 75°C bed, 30–40% fan. The hardened nozzle handles abrasive CF particles. Results are cleaner in the enclosed environment.
PLA/PETG: Standard profiles, open the chamber door for better cooling. The X-Plus 3 handles standard materials without trouble; the engineering capabilities don’t complicate daily PLA use.
vs. the Competition
QIDI Q1 Pro ($449): Same nozzle temp and chamber, 245mm cube, $150 less. Choose Q1 Pro if 280mm isn’t needed and $150 matters. Choose X-Plus 3 if parts frequently approach 260mm+.
Bambu P2S ($549): Passive enclosure, 300°C nozzle, better software, 256mm cube, $50 less. For software quality, Bambu P2S. For active chamber and higher nozzle temp for PA-CF and PC, X-Plus 3 is technically more capable.
Bambu H2D ($1,999): Active chamber, 320°C nozzle (lower than X-Plus 3), LiDAR, better software, 256mm cube, much higher price. For pure engineering material capability, the X-Plus 3 competes with or exceeds the H2D at a fraction of the cost. Bambu’s software and reliability record are the difference.