HDPE vs TPU
Compare HDPE and TPU filaments side-by-side. See which one is best for your 3D printing project.
HDPE
FHigh Density Polyethylene
Common recycled polymer; sometimes used for purging between temp ranges
TPU
SThermoplastic Polyurethane
Perfect layer adhesion; extremely impact resistant; nearly indestructible
Detailed Comparison
Property
HDPE
TPU
Tier Rating
Tier F
Tier S
Family
HDPE
Flexible
Nozzle Temp
220-260°C
200-240°C
Bed Temp
80-100°C
30-60°C
Enclosure
required
not needed
Cooling
Low cooling
Moderate cooling
Moisture Sensitivity
low
high
Strengths Comparison
HDPE Strengths
- Common recycled polymer; sometimes used for purging between temp ranges
TPU Strengths
- Perfect layer adhesion; extremely impact resistant; nearly indestructible
- Great for combat robots, tactical/rough-use parts
- Rubber-like parts (gaskets, grips, bumpers, wheels)
Considerations
HDPE Caveats
- Extremely prone to warping, bed release, layer splitting; described as worst filament overall
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
Is HDPE or TPU better for 3D printing?
TPU is generally rated higher (Tier S) compared to HDPE (Tier F). However, the best choice depends on your specific needs: HDPE is best for Common recycled polymer; sometimes used for purging between temp ranges, while TPU is best for Perfect layer adhesion; extremely impact resistant; nearly indestructible.
What are the temperature differences between HDPE and TPU?
HDPE prints at 220-260°C nozzle / 80-100°C bed. TPU prints at 200-240°C nozzle / 30-60°C bed.
Do HDPE and TPU need an enclosure?
HDPE: required. TPU: not needed.
Which is more beginner-friendly: HDPE or TPU?
TPU is more beginner-friendly as it doesn't require an enclosure.