Qidi X-Plus 3 and Plus 4: The Mid-Size Heated-Chamber Qidis
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The X-Plus 3 is a 280 × 280 × 270 mm enclosed CoreXY with a 65 °C chamber and 350 °C hotend. The Plus 4 replaced it at 305 × 305 × 280 mm with a 370 °C hotend and the Qidi Box option, and the Plus 5 Combo adds multi-colour at 320 × 320 × 300 mm. Buy the Plus 4 or Plus 5 new; an X-Plus 3 only discounted. All three are engineering-filament machines.
Where to buy
Side by side
| Spec | X-Plus 3 | Plus 4 | Plus 5 Combo |
|---|---|---|---|
| Build volume | 280 × 280 × 270 mm | 305 × 305 × 280 mm | 320 × 320 × 300 mm |
| Chamber | 65 °C | 65 °C | 65 °C |
| Max nozzle temperature | 350 °C | 370 °C | See listing |
| Max bed temperature | 120 °C | 120 °C | See listing |
| Multi-material | No | Qidi Box option | Included |
| Status | Superseded | Current | Current |
What changed from X-Plus 3 to Plus 4
- 25 mm more X and Y and a 370 °C hotend, which brings PPS-CF and PPA-CF into range.
- Qidi Box compatibility for four-spool multi-material.
- Revised electronics and firmware; the Plus 4 had an early chamber-heater wiring fix, so check a used unit.
Which to buy
Single-material engineering work: Plus 4. Multi-colour or multi-material engineering work: Plus 5 Combo. Smaller desk and parts under 270 mm: Q2. An X-Plus 3 is only worth it at a clear discount; its 350 °C hotend still covers nylon and PC. See the Qidi lineup.
What all of them share
The 65 °C chamber that makes nylon and PC print without cracking, Klipper-based firmware with root access, nozzle-contact bed probing that wants a clean tip, and a smaller spares ecosystem than Creality or Bambu; see Plus 4 upgrades.
The units in the box
The listings are the Plus 4, the Plus 5 Combo and the Q2.
FAQ
Can the X-Plus 3 hotend be upgraded to 370 °C? Qidi sells hotend parts; check compatibility for the X-Plus 3 specifically.
Do X-Plus 3 plates fit the Plus 4? No; different bed sizes.
LayerWalker
Print defect diagnosis, calibration procedures and parts that actually fit. Corrections welcome through the contact page.
