Materials › Soft TPU (60A–90A)
Soft TPU (60A–90A) – Properties, Temperatures & Tips
All key properties, print settings, pros and cons and matching filaments at a glance.
Properties & print settings
- Nozzle (°C)
- 230–245
- Bed (°C)
- 60–75
- Elongation at break
- Polymaker TPU90: approx. 590%
- Shore hardness
- 60A–90A
- Density (g/cm³)
- approx. 1.2
- Drying
- 70 °C, 8 h
- Difficulty
- demanding
Enclosure optional
What is Soft TPU (60A–90A) used for?
Very soft seals, grips, shoe soles, stamps
+ Pros
Even more elastic and rubbery than 95A
– Cons
"The softer, the harder to print" (Prusa): typically ca. 20 mm/s, little/no retraction
Printing tips at a glance
- Nozzle temperature: 230–245 °C – start in the middle of the range on a new spool and fine-tune with a temperature tower.
- Bed temperature: 60–75 °C.
- An enclosure is optional but helps against warping on large parts.
- Drying: 70 °C, 8 h. Wet filament shows up as crackling, stringing and rough surfaces.
Compare similar materials
| Material | Difficulty | Nozzle (°C) | Bed (°C) | Heat resistance HDT (°C) | Tensile strength (MPa) |
|---|---|---|---|---|---|
| Soft TPU (60A–90A) | 4/5 | 230–245 | 60–75 | – | – |
| TPU 95A (flexible) | 3/5 | 210–240 | 25–60 | – | approx. 30 (Bambu TPU 95A) |
| PETG | 2/5 | 230–270 | 60–80 | 69–78 | 38–51 |
| PLA | 1/5 | 190–230 | 25–65 | 55–60 | 40–52 |
Matching filaments from partner shops
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Frequently asked questions
What nozzle temperature does Soft TPU (60A–90A) need?
Guideline for Soft TPU (60A–90A): 230–245 °C nozzle and 60–75 °C bed temperature. The exact values are printed on the manufacturer's spool.
Does Soft TPU (60A–90A) need to be dried?
Recommended: 70 °C, 8 h.
Do I need an enclosure for Soft TPU (60A–90A)?
An enclosure is optional but helps against warping on large parts.
Values are guidelines from manufacturer datasheets (Polymaker, Bambu Lab, Prusa). They may differ by manufacturer, colour and print settings.