Semi-flexible TPU vs PLA
Compare Semi-flexible TPU and PLA filaments side-by-side so you can pick the right one for your 3D printing project.
Semi-flexible TPU vs PLA: Semi-flexible TPU is known for good balance for bumpers/hinges/impacty parts, while PLA is known for easiest to print. Both have no enclosure requirements; PLA is less moisture-sensitive; Semi-flexible TPU prints at higher nozzle temperatures (210-230°C vs 190-220°C). Choose Semi-flexible TPU for good balance for bumpers/hinges/impacty parts, or PLA for easiest to print.
Key differences at a glance
Semi-flexible TPU
BMid-durometer TPU
Good balance for bumpers/hinges/impacty parts
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
Semi-flexible TPU Strengths
- Good balance for bumpers/hinges/impacty parts
PLA Strengths
- Easiest to print, cheap, widely available, fast, good bridges/overhangs, easy support removal
- Stiff non-composite thermoplastic, good tensile strength
Considerations
Semi-flexible TPU Caveats
- Too stiff for some flexible uses; too soft for some rigid uses
PLA Caveats
- Creeps under sustained load
- Poor heat resistance, UV degradation, can shatter on drops
- Not great for sanding/gluing/painting/touch-ups