Filament Comparison
PLA vs PETG: Which 3D Printing Filament Should You Choose?
Comparing the two most popular FDM thermoplastics in mechanical stiffness, heat tolerance, weatherability, and practical application fit.
1. Head-to-Head Comparison Summary
| Property | PLA+ | Tough PETG |
|---|---|---|
| Tensile Strength | 55 MPa (Higher pure tensile stiffness) | 50 MPa (More ductile) |
| Heat Deflection Temp (HDT) | 55°C (Deforms in hot cars) | 75°C (Safe in hot sun) |
| Impact Resistance | Moderate (Can snap under shock) | High (Absorbs shock loads) |
| Outdoor UV / Water Resistance | Moderate (Biodegradable over years) | Excellent (100% waterproof) |
| Surface Detail Quality | Crisp & Clean | Smooth with slight gloss |
2. When Should You Choose PLA+?
Choose PLA+ when you need maximum visual aesthetics, sharp embossing, and high dimensional accuracy at the lowest cost:
- Personalized keychains, nameplates, and desk lifestyle accessories.
- Visual architecture scale models and concept proof-of-concept mockups.
- Cosplay props, board game miniatures, and artistic sculptures.
3. When Should You Choose PETG?
Choose PETG whenever a part will encounter outdoor conditions, mechanical flex, or operating heat:
- Drone frames, robotics brackets, and motor mount plates.
- Outdoor solar sensor brackets, waterproof IoT enclosures, and bike mounts.
- Snap-fit mechanical clips and parts requiring threaded brass inserts.