Ultrafuse rPET vs TPU

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

Ultrafuse rPET vs TPU: Ultrafuse rPET is known for tougher than pla, while TPU is known for excellent layer adhesion. Both have no enclosure requirements; Ultrafuse rPET is less moisture-sensitive; Ultrafuse rPET prints at higher nozzle temperatures (235°C vs 200-240°C). Choose Ultrafuse rPET for tougher than pla, or TPU for excellent layer adhesion.

Key differences at a glance

Property
Ultrafuse rPET
TPU
Nozzle temp
235°C
200-240°C
Bed temp
75°C
30-60°C
Enclosure needed
No
No
Ease of printing
Easy
Easy
Moisture sensitivity
low
high

Detailed Comparison

Property
Ultrafuse rPET
TPU
Tier Rating
Tier null
Tier S
Family
PETG
Flexible
Nozzle Temp
235°C
200-240°C
Bed Temp
75°C
30-60°C
Enclosure
not needed
not needed
Cooling
Moderate cooling
Moisture Sensitivity
low
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

Ultrafuse rPET Strengths

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

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

Ultrafuse rPET Caveats

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

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 Ultrafuse rPET and TPU?
Ultrafuse rPET prints at 235°C nozzle / 75°C bed (No enclosure, low moisture sensitivity). TPU prints at 200-240°C nozzle / 30-60°C bed (No enclosure, high moisture sensitivity).
Is Ultrafuse rPET or TPU stronger?
Our dataset does not include comparable tensile strength values for both. Qualitatively, Ultrafuse rPET is suited to tougher than pla, while TPU is suited to excellent layer adhesion.
Which prints at a higher temperature, Ultrafuse rPET or TPU?
Ultrafuse rPET prints at a higher temperature (235°C nozzle vs 200-240°C for TPU).
Is Ultrafuse rPET or TPU better for beginners?
Ultrafuse rPET is better for beginners: enclosure is no and moisture sensitivity is low, vs no enclosure and high moisture for TPU.
Should I use Ultrafuse rPET or TPU for flexible parts?
For flexible parts, TPU is usually the better fit (Excellent layer adhesion). Choose Ultrafuse rPET instead when tougher than pla.

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