PLA vs PETG vs ABS — which filament should you choose?
A practical comparison of the three most common filaments: strength, temperature, difficulty and real-world use.
2026-01-15 · 3DHub.ge
Choosing the right filament matters more than choosing the printer. The same machine produces completely different results depending on the material. Here are the three main options and when to use each.
PLA — for beginners and everyday printing
PLA is the easiest material to print. It runs at low temperatures (190–220°C), barely warps, and needs no enclosure. It has almost no smell.
Strengths: easy to print, sharp detail, huge colour range, low cost.
Weaknesses: poor heat resistance — it starts deforming above 50–60°C. A PLA print left in a car in summer will warp. It is also brittle: it snaps rather than bends.
Use it for: decor, prototypes, toys, models, anything that lives indoors.
PETG — the middle ground
PETG sits between PLA and ABS. It prints at 230–250°C, survives around 80°C, and unlike PLA it bends instead of snapping.
Strengths: durability, resistance to moisture and chemicals, strong layer adhesion.
Weaknesses: it tends to string — retraction settings matter. Surface finish is slightly less clean than PLA.
Use it for: functional parts, brackets, enclosures, anything outdoors or exposed to moisture.
ABS and ASA — the engineering materials
ABS handles 100°C and above, sands well and can be glued with acetone. But it warps badly and gives off fumes — an enclosure and ventilation are required.
ASA is essentially ABS with UV resistance: it will not yellow in sunlight. For outdoor parts, choose ASA.
Use it for: car parts, technical components, anything that must survive heat or sun.
Comparison
| Property | PLA | PETG | ABS / ASA |
|---|---|---|---|
| Print difficulty | Very easy | Medium | Hard |
| Nozzle temp | 190–220°C | 230–250°C | 240–260°C |
| Bed temp | 50–60°C | 70–85°C | 90–110°C |
| Heat resistance | ~55°C | ~80°C | ~100°C+ |
| Enclosure needed | No | Helpful | Required |
| Impact strength | Low (brittle) | High | High |
Advice for beginners
Start with PLA. Learn how your printer behaves, master the first layer and calibration. When you need a functional part, move to PETG. Only reach for ABS/ASA if you have an enclosed printer and the part genuinely needs heat resistance.
Frequently asked questions
Which filament is the strongest?
For impact resistance, PETG and ABS are far stronger than PLA. PLA is stiffer but brittle — it snaps under load. For functional parts, choose PETG.
Can I print ABS without an enclosure?
Technically yes, but it is not recommended: the part will warp and layers will separate. ABS also releases fumes, so ventilation is needed. Use PETG instead.
Why does PETG string so much?
PETG is stickier than PLA. Increase retraction distance, lower the temperature slightly (5–10°C), and dry the filament — wet PETG strings far more.