PLA or PETG: Which Filament Fits Better?
PLA is usually easier to print and works great for many indoor parts. PETG is tougher, more moisture-resistant and better suited to many mechanical applications. If a part just needs to fit well and stay indoors, PLA is often enough. For holders, adapters or humid environments, PETG is usually the more sensible choice.
Comparison
| Property | PLA | PETG |
|---|---|---|
| Printability | very easy | easy to moderate |
| Warping | low | low |
| Stringing | usually low | more common |
| Toughness | moderate | higher |
| Detail reproduction | very good | good |
| Moisture in use | okay | better suited |
| Heat resistance | rather low | higher |
| Functional holders | limited to good | very good |
| Beginner-friendly | very high | high |
Choose PLA when …
- printability is the top priority
- the part stays indoors
- load is low to moderate
- fine detail matters
- high temperature isn't a factor
Choose PETG when …
- the part needs to be tougher
- it's a holder or adapter
- moisture is involved
- layer adhesion matters a lot
- PLA is too brittle for the application
Which one holds dimensions better?
There's no across-the-board winner. Filament batch, print temperature, cooling, speed, calibration and geometry all affect real-world dimensional accuracy. For plug-in parts, a test print matters more than assuming one material is automatically "more accurate."