PLA vs TPU (flexible): cost compared
TPU costs much more per kg and often prints at half speed or less. Use it only where flexibility is the product.
| PLA | TPU (flexible) | |
|---|---|---|
| Cost per 100 cm³ of solid part | $2.48 | $4.24 |
| Example print (preset) | $6.70 | $9.43 |
| Typical spool price | $15–25 per kg | $25–45 per kg |
| Density | about 1.24 g/cm³ | about 1.2 g/cm³ |
| Nozzle / bed | 190–220 °C / 50–60 °C | 210–235 °C / 30–60 °C |
| Enclosure | Not needed | — |
Typical published ranges and mid-range prices. Example prints use each page's calculator preset. Cost per volume accounts for density: a lighter filament gives more parts per kilogram.
Choose PLA for
Rigid parts
- It softens around 55–60 °C, so avoid products for hot cars or dishwashers.
- Its UV resistance is limited for outdoor items.
Choose TPU (flexible) for
Phone cases, gaskets, grips, wearables
- Bowden setups jam easily. Moisture causes stringing.
What changes the comparison
- At $20/kg, every 100 g of PLA costs about $2.00.
- Low bed temperature keeps the electricity cost low, usually only a few cents an hour.
- Slow speeds can double print time compared with the same part in PLA.
- The bed runs cool, so electricity per hour is low but you pay for more hours.
More comparisons
Know your cost. Now check the demand.
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