PCL vs TPU

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

PCL vs TPU: PCL is known for very low-temp printing (~100c), while TPU is known for excellent layer adhesion. Both have no enclosure requirements; PCL is less moisture-sensitive; TPU prints at higher nozzle temperatures (200-240°C vs 60-110°C). Choose PCL for very low-temp printing (~100c), or TPU for excellent layer adhesion.

Key differences at a glance

Property
PCL
TPU
Nozzle temp
60-110°C
200-240°C
Bed temp
30-45°C
30-60°C
Enclosure needed
No
No
Ease of printing
Easy
Easy
Moisture sensitivity
low
high

PCL

B

Polycaprolactone

Very low-temp printing (~100C); softens in warm water; can be heat-formed

TPU

S

Thermoplastic Polyurethane

Excellent layer adhesion; extremely impact resistant; highly durable

Detailed Comparison

Property
PCL
TPU
Tier Rating
Tier B
Tier S
Family
PCL
Flexible
Nozzle Temp
60-110°C
200-240°C
Bed Temp
30-45°C
30-60°C
Enclosure
not needed
not needed
Cooling
Minimal
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

PCL Strengths

  • Very low-temp printing (~100C); softens in warm water; can be heat-formed
  • Useful for prosthetics/fitment via hairdryer reshaping
  • Can be used like an adhesive; similar to Shapelock/InstaMorph pellets

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

PCL Caveats

  • Not actually PLA despite branding
  • Low-temp / waxy nature limits use cases; poor adhesion for many glues

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 PCL and TPU?
PCL prints at 60-110°C nozzle / 30-45°C bed (No enclosure, low moisture sensitivity). TPU prints at 200-240°C nozzle / 30-60°C bed (No enclosure, high moisture sensitivity).
Is PCL or TPU stronger?
Our dataset does not include comparable tensile strength values for both. Qualitatively, PCL is suited to very low-temp printing (~100c), while TPU is suited to excellent layer adhesion.
Which prints at a higher temperature, PCL or TPU?
TPU prints at a higher temperature (200-240°C nozzle vs 60-110°C for PCL).
Is PCL or TPU better for beginners?
PCL is better for beginners: enclosure is no and moisture sensitivity is low, vs no enclosure and high moisture for TPU.
Should I use PCL or TPU for flexible parts?
For flexible parts, TPU is usually the better fit (Excellent layer adhesion). Choose PCL instead when very low-temp printing (~100c).

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