Soft TPU vs PLA
Compare Soft TPU and PLA filaments side-by-side so you can pick the right one for your 3D printing project.
Soft TPU vs PLA: Soft TPU is known for very flexible, while PLA is known for easiest to print. Both have no enclosure requirements; PLA is less moisture-sensitive; Soft TPU prints at higher nozzle temperatures (200-220°C vs 190-220°C). Choose Soft TPU for very flexible, or PLA for easiest to print.
Key differences at a glance
Soft TPU
CLow durometer TPU (~80A)
Very flexible
PLA
APolylactic Acid
Easiest to print, cheap, widely available, fast, good bridges/overhangs, easy support removal
Detailed Comparison
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
PLA Strengths
- Easiest to print, cheap, widely available, fast, good bridges/overhangs, easy support removal
- Stiff non-composite thermoplastic, good tensile strength
Considerations
Soft TPU Caveats
- Can tangle around drive gear
- Uncomfortable for wearables (doesn't breathe; gets sweaty)
PLA Caveats
- Creeps under sustained load
- Poor heat resistance, UV degradation, can shatter on drops
- Not great for sanding/gluing/painting/touch-ups