Soft TPU vs TPU

Compare Soft TPU and TPU filaments side-by-side so you can pick the right one for your 3D printing project.

Soft TPU vs TPU: Soft TPU is known for very flexible, while TPU is known for excellent layer adhesion. Both have no enclosure requirements; TPU prints at higher nozzle temperatures (200-240°C vs 200-220°C). Choose Soft TPU for very flexible, or TPU for excellent layer adhesion.

Key differences at a glance

Property
Soft TPU
TPU
Nozzle temp
200-220°C
200-240°C
Bed temp
30-50°C
30-60°C
Enclosure needed
No
No
Ease of printing
Easy
Easy
Moisture sensitivity
high
high

Soft TPU

C

Low durometer TPU (~80A)

Very flexible

TPU

S

Thermoplastic Polyurethane

Excellent layer adhesion; extremely impact resistant; highly durable

Detailed Comparison

Property
Soft TPU
TPU
Tier Rating
Tier C
Tier S
Family
Flexible
Flexible
Nozzle Temp
200-220°C
200-240°C
Bed Temp
30-50°C
30-60°C
Enclosure
not needed
not needed
Cooling
Low cooling
Moderate cooling
Moisture Sensitivity
high
high

Green marks the generally easier or more forgiving option in that row, based on tier, enclosure needs, and moisture sensitivity. It is not always the better choice for a specific job, so weigh it against what your project actually needs.

Strengths Comparison

Soft TPU Strengths

  • Very flexible

TPU Strengths

  • Excellent layer adhesion; extremely impact resistant; highly durable
  • Great for combat robots, tactical/rough-use parts
  • Rubber-like parts (gaskets, grips, bumpers, wheels)

Considerations

Soft TPU Caveats

  • Can tangle around drive gear
  • Uncomfortable for wearables (doesn't breathe; gets sweaty)

TPU Caveats

  • Slow printing; retraction can cause jams (especially in Bowden setups)
  • Stringing is common
  • Very moisture sensitive; wet TPU prints poorly

Frequently Asked Questions

What is the difference between Soft TPU and TPU?
Soft TPU prints at 200-220°C nozzle / 30-50°C bed (No enclosure, high moisture sensitivity). TPU prints at 200-240°C nozzle / 30-60°C bed (No enclosure, high moisture sensitivity).
Is Soft TPU or TPU stronger?
Our dataset does not include comparable tensile strength values for both. Qualitatively, Soft TPU is suited to very flexible, while TPU is suited to excellent layer adhesion.
Which prints at a higher temperature, Soft TPU or TPU?
TPU prints at a higher temperature (200-240°C nozzle vs 200-220°C for Soft TPU).
Is Soft TPU or TPU better for beginners?
Both are similarly approachable: Soft TPU (no enclosure, high moisture) and TPU (no enclosure, high moisture).
Should I use Soft TPU or TPU for flexible parts?
For flexible parts, Soft TPU is usually the better fit (Very flexible). Choose TPU instead when excellent layer adhesion.

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