Soft TPU vs PETG

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

Soft TPU vs PETG: Soft TPU is known for very flexible, while PETG is known for tougher than pla. Soft TPU is easier to print; PETG is less moisture-sensitive; PETG prints at higher nozzle temperatures (230-250°C vs 200-220°C). Choose Soft TPU for very flexible, or PETG for tougher than pla.

Key differences at a glance

Property
Soft TPU
PETG
Nozzle temp
200-220°C
230-250°C
Bed temp
30-50°C
70-90°C
Enclosure needed
No
Optional
Ease of printing
Easy
Moderate
Moisture sensitivity
high
moderate

Soft TPU

C

Low durometer TPU (~80A)

Very flexible

PETG

A

Polyethylene Terephthalate Glycol-modified

Tougher than PLA, higher temp tolerance, more durable in real-world use

Detailed Comparison

Property
Soft TPU
PETG
Tier Rating
Tier C
Tier A
Family
Flexible
PETG
Nozzle Temp
200-220°C
230-250°C
Bed Temp
30-50°C
70-90°C
Enclosure
not needed
optional
Cooling
Low cooling
Moderate cooling; too much cooling can hurt layer adhesion
Moisture Sensitivity
high
moderate

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

PETG Strengths

  • Tougher than PLA, higher temp tolerance, more durable in real-world use
  • Good clarity and low friction among easy-to-print materials

Considerations

Soft TPU Caveats

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

PETG Caveats

  • Overhangs/bridges sag; supports can be hard to remove
  • Absorbs water fairly quickly

Frequently Asked Questions

What is the difference between Soft TPU and PETG?
Soft TPU prints at 200-220°C nozzle / 30-50°C bed (No enclosure, high moisture sensitivity). PETG prints at 230-250°C nozzle / 70-90°C bed (Optional enclosure, moderate moisture sensitivity).
Is Soft TPU or PETG stronger?
Our dataset does not include comparable tensile strength values for both. Qualitatively, Soft TPU is suited to very flexible, while PETG is suited to tougher than pla.
Which prints at a higher temperature, Soft TPU or PETG?
PETG prints at a higher temperature (230-250°C nozzle vs 200-220°C for Soft TPU).
Is Soft TPU or PETG better for beginners?
Both are similarly approachable: Soft TPU (no enclosure, high moisture) and PETG (optional enclosure, moderate moisture).
Should I use Soft TPU or PETG for flexible parts?
For flexible parts, Soft TPU is usually the better fit (Very flexible). Choose PETG instead when tougher than pla.

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