The material decides whether a part only looks good or also holds up in service. Each material has different strength, heat resistance and behaviour under load. Here is an overview of the most commonly used ones.
PLA: prototypes and visual models
PLA is the most common material for FDM. It prints well, with sharp details and a smooth surface. However, it is more brittle and softens at higher temperatures, so it is not suitable for parts exposed to sun in a car or placed near heat sources. Use: models, visualisations and prototypes without heavy mechanical load.
PETG and ABS: parts that have to withstand something
PETG combines good printability with higher toughness and resistance to moisture. It is suitable for functional parts, covers, holders and outdoor use.
ABS withstands higher temperatures and is tougher, but it is harder to print. It is used for technical housings and parts exposed to heat.
Nylon and engineering plastics
Nylon (PA) is among the toughest printed materials. It tolerates repeated bending, abrasion and impacts well. It is used for gears, hinges and mechanical parts. It is sensitive to moisture, so it must be stored correctly.
Resins and nylon powder
Resin in SLA gives a smooth surface and fine details, so it suits models with high demands on appearance and presentation samples. SLS prints from nylon powder without supports. The parts are strong and suitable for functional components and complex internal shapes.
| Material | Strength and toughness | Heat resistance | Best for |
|---|---|---|---|
| PLA | Lower, more brittle | Low | Prototypes, visual models |
| PETG | Medium to high | Medium | Functional parts, outdoor use |
| ABS | High | High | Technical parts |
| Nylon (PA) | Very high | Medium to high | Mechanical, stressed parts |
| SLA resin | Lower, more brittle | Low to medium | Detail, smooth surface |
| SLS nylon | High | Medium to high | Functional parts, complex shapes |
The figures are indicative. Exact properties depend on the specific material manufacturer and the print settings.
How to choose a material
These questions will help:
- Will the part be exposed to heat, UV radiation or moisture?
- Does it have to withstand repeated stress, or is it a one-off model?
- Is appearance or function more important?
If you are not sure, tell us what the part will be used for, and we will suggest a material based on its actual use.
Related:Materials guide →