PLA vs PETG: Which Filament Should You Use?
Written by Dion, Owner at FilamentHub Last updated July 28, 2026Share
Choosing between PLA and PETG is one of the most common questions in 3D printing, and it's usually the first real material decision a new printer owner has to make. Both are beginner-friendly compared to engineering filaments like ABS or Nylon, but they behave differently enough that picking the wrong one for a functional part can mean a reprint. Here's how to actually decide, not just a spec table.
What is PLA?
PLA is easy to print, has low warping and produces clean detail. It is ideal for beginners, display models, cosplay, prototypes and indoor prints.
PLA also has the largest range of colours and finishes of any material we stock. It's genuinely the filament we reach for first — even for prototyping — before stepping up to ABS or ASA once a part actually needs to be functional.
- Very easy to print
- Great surface finish
- Low warping
- Best for indoor use
What is PETG?
PETG is stronger and tougher than PLA, with better heat resistance and better durability for functional parts.
The most common issue we see with PETG isn't the printing itself — it's skipping the drying step. Wet PETG causes bubbling and popping mid-print, and combined with slightly-off settings, that's the real reason PETG gets a reputation for being harder to print than it actually is. Store it properly and dry it before use, and it prints easily.
- Stronger than PLA
- Better heat resistance
- Good for outdoor parts
- Great for functional prints
Print Settings: What Actually Changes
These are the tested settings from our own PLA Pro and PETG Pro technical data sheets — not generic estimates.
| Setting | PLA Pro | PETG Pro |
|---|---|---|
| Nozzle Temp | 190–220°C | 230–250°C |
| Bed Temp | 40–60°C | 60–70°C |
| Cooling Fan | On (full) | Low speed (30–50%) |
| Retraction Speed | 20–40 mm/s | 30–50 mm/s |
| Heat Deflection Temp (as printed) | 50–55°C | 68–71°C |
That heat deflection row is the real number behind "PETG handles heat better." PLA starts deforming under load at 50–55°C, while PETG holds up to 68–71°C — which is exactly why a PLA part left on a dashboard or in a hot car is a genuine risk in an Australian summer, while PETG has meaningfully more headroom.
PLA vs PETG Comparison
| Feature | PLA | PETG | Best Choice |
|---|---|---|---|
| Ease of Printing | Excellent | Good | PLA |
| Strength | Good | Better | PETG |
| Heat Resistance | Lower | Higher | PETG |
| Outdoor Use | Poor | Good | PETG |
| Surface Finish | Excellent | Good | PLA |
Cost Comparison
At FilamentHub, PETG Pro is currently the same price as (or slightly cheaper than) PLA Pro per spool — so cost isn't really the deciding factor between them. Choose based on what the part actually needs to do, not price.
Common Failure Modes
PLA softens when exposed to heat or direct sunlight for long periods — but how much it deforms depends on how the part was printed. A model with a thin arm pointing upward will sag and lose shape far faster than a solid dome or cube of the same material. Colour matters too: darker colours like black absorb more heat than white and will soften faster in direct sun.
PETG is the better choice for that kind of outdoor exposure without needing to jump straight to ABS or ASA, especially if you're running an open-frame printer without an enclosure. Just make sure it's properly dried before printing — PETG is hygroscopic (it absorbs moisture from the air), and printing it wet is where most of the stringing and surface-quality complaints actually come from.
Decision Checklist
Ask yourself:
- Does this part need to survive heat, sun, or the outdoors? → PETG
- Is this purely for display, a prototype, or an indoor-only part? → PLA
- Do you need the cleanest possible surface finish? → PLA
- Does it need to flex slightly or absorb impact without cracking? → PETG (or consider TPU if it needs to be genuinely flexible)
- New to 3D printing and just want something that prints reliably? → PLA
Final Verdict
If you want the easiest printing experience and clean detail, choose PLA. If you need stronger, tougher parts with better heat and outdoor resistance, choose PETG. When in doubt, try our comparison tool or use the filament finder quiz to get a recommendation based on your specific project.