Types of 3D Filaments
Buying your first plastic filaments can feel overwhelming. Here’s a quick summary of the most relevant aspects you need to know about the different materials!
Common 3D Printing Filaments
- PLA: Easy to print but bends easily. Not suitable for outdoor use. Softens at ~55ºC (131ºF). Not water-resistant.
- PLA+: Stronger than PLA but still unsuitable for outdoor use. Same softening point (~55ºC/131ºF). Not water-resistant.
- PETG: Tough, slightly flexible, and water-resistant. Suitable for outdoor use. Softens at ~70ºC (158ºF).
- ASA: UV and weather-resistant, ideal for outdoor applications. Withstands up to 100ºC (212ºF). Requires an enclosed printer.
- TPU: Flexible and durable. Suitable for outdoor use but may discolor over time. Rubber-like feel, often used for phone cases. Starts to soften at ~60ºC (140ºF).
Variations for a Special Look
- Silk PLA: Glossy, silky finish.
- Rapid PLA / PETG: Designed for high-speed printing.
- Galaxy (Sparkling) PLA: Contains glitter particles; requires larger nozzles.
- Metallic, Stone, or Wood Filaments: Contains fibers for texture; requires hardened steel nozzles.
Filament Comparison Table
| Filament | Outdoor Use | Water-resistant | Softening Temperature | Flexibility | Considerations |
|---|---|---|---|---|---|
| PLA | ❌ | ❌ | ~55ºC (131ºF) | Low | Easy to print |
| PLA+ | ❌ | ❌ | ~55ºC (131ºF) | Low | PLA but stronger |
| PETG | 〰 | ✅ | ~70ºC (158ºF) | Medium | Cheaper and easier to print than ASA/TPU |
| ASA | ✅ | ✅ | ~100ºC (212ºF) | Medium | Requires enclosed printer |
| TPU | ✅ | ✅ | ~60ºC (140ºF) | High | Flexible, rubber-like feel |