TPU settings
Slicer settings for printing TPU filament on the Neptune 4 Ultra. Nozzle temperature, bed temperature, fan speed, retraction, and print speed — sourced from official slicer profiles.
Recommended settings (0.4 mm brass nozzle)
Nozzle temp225°C210–240°C range
Bed temp40°C30–50°C range
Fan speed60%Min 20%
Print speed20 mm/sStarting point
Retraction1.5 mmAt 35 mm/s
Nozzle0.4 mmbrass
Source: Derived. Based on manufacturer specifications.
All nozzle sizes
0.4 mm nozzle
| Filament | Nozzle temp | Bed temp | Fan | Speed | Retraction | Source |
|---|---|---|---|---|---|---|
| TPU 95A Generic | 225°C 210–240°C | 40°C 30–50°C | 60% /20% | 20 mm/s | 1.5 mm @ 35 mm/s | Derived |
Tips for printing TPU on the Neptune 4 Ultra
- Print TPU slowly (20–30 mm/s) — the flexible nature causes feeding issues at high speeds.
- Disable or minimize retraction to prevent grinding. Direct-drive extruders handle TPU much better than Bowden setups.
- Dry TPU filament before printing for consistent results and to prevent stringing.