PLA and PETG are the two most widely used filaments of all — and also the most common dilemma when choosing one. The answer is simple if you ask the right question: not "which is easier to print", but "what does the finished part actually need to withstand".
When to choose PLA
PLA is the easiest material to print: minimal shrinkage, no need for an enclosed printer, a clean surface and excellent detail. That makes it the first choice for models, prototypes, decorations, figurines and visual parts, where appearance and speed matter most.
- prototypes and test models
- decorations, gifts, visual parts where detail matters
- school and hobby projects
PLA's weakness is heat resistance — a part starts to soften at around 55–60 °C. A shelf above a radiator, a car dashboard or outdoor summer use are risky environments for it.
When to choose PETG
PETG combines still-fairly-easy printing with higher toughness, better heat resistance and resistance to moisture. It's a versatile "workhorse" material for parts that need to hold up to something:
- brackets, mounts and assembly parts
- electronics enclosures and technical components
- parts that come into contact with moisture
Comparison at a glance
| Property | PLA | PETG |
|---|---|---|
| Ease of printing | excellent | good |
| Detail and surface finish | excellent, more matte | good, slightly glossy |
| Toughness | lower (more brittle) | higher |
| Heat resistance | lower | medium |
| Moisture resistance | medium | good |
| Typical use | models, prototypes, decorations | functional parts, brackets, covers |
A practical rule of thumb
If the print mainly needs to look good — choose PLA. If it mainly needs to work — choose PETG. And if it needs to work at higher temperatures or outdoors, move on to ABS or ASA.
We manufacture both materials in Slovakia with a diameter tolerance of ±0.02 mm — find them in our online shop.