No, it is not required.
No, it is not required. However, a 0.2 mm nozzle is not recommended for TPU 95A HF due to its high extrusion resistance and increased risk of clogging. A larger nozzle size ensures smoother extrusion, better flow stability, and more reliable printing performance.
TPU is a flexible filament that requires more precise control during both loading and unloading. Using automatic filament feeding may cause issues such as filament loading failures, unstable feeding, or nozzle clogs, increasing the risk of print failure.
To ensure the best printing experience, please load and unload TPU filament manually and do not use the automatic filament feeder.
We also strongly recommend watching our video guide before starting your first TPU print.
It is necessary to dry TPU 95A HF before printing. TPU is highly moisture-sensitive, and absorbed moisture can lead to issues such as stringing, bubbling, and inconsistent extrusion.
For optimal print quality, it is also necessary to keep the filament continuously dried during printing and storage.
For best results, it is recommended to use a filament dryer such as the SnapDryer throughout both pre-print drying and the printing process.
| Build Plate | Compatibility |
|---|---|
| U1 Textured PEI Steel Plate | Compatible |
| U1 Smooth PEI Steel Plate | Compatible |
| U1 Graphic Effect Steel Plate | Compatible |
Note:
| Comparison Dimensions | Generic TPU 95A | TPU 95A HF |
|---|---|---|
| Flowability | Lower (soft & sticky) | Higher (easier extrusion) |
| Recommended Print Speed | 20–40 mm/s | 50–110 mm/s |
| Feeding Stability | Prone to slipping/jamming | More stable |
| Stringing | Pronounced | Improved |
| Retraction Response | Poor (typical for soft materials) | More controllable |
| Printing Difficulty | High (especially for beginners) | Significantly reduced |
| Elastic Performance | Standard TPU elasticity | Similar to Generic TPU 95A |
If you notice bubbles or heavy stringing when printing with TPU, we recommend drying the filament thoroughly first, as moisture is one of the most common causes of stringing. For optimal print quality, using SnapDryer during printing is also recommended.
If stringing persists after drying, try the following adjustments:
These adjustments can help reduce oozing and improve overall print quality.
To reduce the risk of nozzle clogging when printing with TPU, we recommend optimizing the following settings and setup:
Nozzle Selection: Printing with a 0.2 mm nozzle is not recommended, as the smaller nozzle diameter may increase the likelihood of clogging when printing flexible materials.
Retraction Settings: Reduce the retraction distance (or disable retraction if necessary), as excessive retraction may lead to heat creep and cause the filament to soften inside the hot end.
Filament Feeding: Use a hanging spool setup to minimize feeding resistance and allow smoother filament delivery.
Stable Extrusion: Ensure the filament feeds smoothly and consistently throughout the print to avoid unnecessary strain on the extrusion system.
These adjustments can help improve extrusion stability and reduce the chance of nozzle clogging during TPU printing.