PLA vs PETG: Which Filament Should You Use?
Choosing the right filament is one of the most important decisions you'll make as a 3D printing enthusiast. Two of the most popular materials — PLA and PETG — each have distinct strengths. This guide breaks down the differences so you can pick the right one for your next project.
What Is PLA?
PLA (Polylactic Acid) is the most beginner-friendly filament on the market. Made from renewable resources like cornstarch, it's biodegradable, easy to print, and produces sharp, detailed results. It's the go-to choice for prototypes, decorative prints, and everyday objects.
Best for: Figurines, prototypes, display models, low-stress parts
Print temp: 190–220°C | Bed temp: 0–60°C (no heated bed required)
What Is PETG?
PETG (Polyethylene Terephthalate Glycol) bridges the gap between PLA and engineering-grade filaments. It's tougher, more flexible, and highly resistant to moisture and chemicals — making it ideal for functional parts that need to hold up under real-world conditions.
Best for: Mechanical parts, food-safe containers, outdoor use, snap-fit components
Print temp: 230–250°C | Bed temp: 70–85°C
PLA vs PETG: Side-by-Side Comparison
| Property | PLA | PETG |
|---|---|---|
| Ease of printing | ⭐⭐⭐⭐⭐ Very easy | ⭐⭐⭐⭐ Easy |
| Strength | Moderate | High |
| Flexibility | Brittle | Slightly flexible |
| Heat resistance | Low (~60°C) | Moderate (~80°C) |
| Moisture resistance | Low | High |
| Food safe | Sometimes | Yes (with proper nozzle) |
| Biodegradable | Yes | No |
When to Choose PLA
- You're new to 3D printing and want reliable, easy results
- Your print won't be exposed to heat or outdoor conditions
- You need fine detail and a smooth surface finish
- You're printing decorative items, cosplay props, or models
When to Choose PETG
- Your part needs to handle mechanical stress or repeated use
- The print will be exposed to moisture, chemicals, or moderate heat
- You need a food-safe or outdoor-durable part
- You want better layer adhesion and impact resistance than PLA
Tips for Printing PLA Successfully
- Use a clean, level bed — PLA adheres well to glass, PEI, and blue tape
- Keep print speeds moderate (40–60 mm/s) for best detail
- Store in a sealed bag with desiccant to prevent moisture absorption
- No enclosure needed — PLA prints well in open air
Tips for Printing PETG Successfully
- Use a heated bed (70–85°C) and apply a thin layer of glue stick to prevent over-adhesion
- Slow down first layer speed to ~20 mm/s for better adhesion
- Reduce retraction distance compared to PLA to avoid stringing
- Dry your filament before printing — PETG is hygroscopic
Our Recommendation
For most beginners and general-purpose printing, start with PLA+ — it's forgiving, strong, and produces great results. Once you're comfortable and need parts that can handle more demanding conditions, upgrade to PETG.
Browse our full selection of PLA filaments and PETG filaments to find the right material for your next project.