Overview
TPU is a flexible filament used for grips, bumpers, shock-absorbing parts, and anything that needs to compress or bend. Printing TPU is slower and requires stable filament flow, but the A1 handles it well. These notes come from producing small parts and functional items.
When I use TPU
- Protective feet or bumpers.
- Phone stands or grips.
- Cable organisers and strain reliefs.
- Weather seals and vibration pads.
TPU works best for lower-speed functional prints that take advantage of its flexibility.
Recommended settings
| Nozzle temperature | 225 to 235°C |
| Bed temperature | 50 to 60°C |
| Layer height | 0.20 mm |
| Cooling | Fan 50 to 70 percent |
| Infill | 15 to 25 percent |
| Speed | Slow, 35 to 60 mm/s |
| Walls | 2 or 3 |
TPU benefits from reduced retraction and slower movement to avoid filament buckling.
Tips for best results
- Reduce retraction to prevent clogging.
- Keep filament dry for cleaner extrusion.
- Use slow outer walls for crisp detail.
- Avoid tight filament paths or sharp bends.
Limitations
- Slow print speeds.
- Less precise detail than PLA.
- Requires careful filament handling.
