Comparison of the Best PETG Filaments: Which One to Choose in 2026?

Introduction

At DunaTech, we tested over 12 PETG filaments in our workshop to identify which ones offer the best quality, durability, and ease of printing. PETG has become a favorite for many due to its balance between toughness and ease of use, but not all filaments are created equal. Below, we present a detailed comparison based on our tests.

Analysis of Popular Brands

1. Esun PETG

After printing more than 10 parts with this filament, I was impressed by its consistent diameter. This helps prevent extruder clogs. Additionally, it boasts excellent impact resistance. However, it requires a high bed temperature (around 80°C), which might be an issue for more basic printers.

**Pros:**
– Consistent diameter.
– Good impact resistance and flexibility.
– Wide range of available colors.

**Cons:**
– Requires higher bed temperatures.
– Can be tricky to adhere without using hairspray or Kapton tape.

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2. Sunlu PETG

In my tests, Sunlu stood out for its ease of printing. Initial adhesion is nearly perfect with a heated bed set to 70°C. However, I noticed it tends to produce more stringing if the retraction settings are not properly adjusted.

**Pros:**
– Excellent initial adhesion.
– Fewer warping issues on large parts.
– Competitive price.

**Cons:**
– Produces more stringing if retraction is not optimized.
– Fewer color options compared to other brands.

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Common Problems and How to Solve Them

PETG is known for its toughness, but it can also be tricky if you don’t adjust your settings properly. Here are the most common issues and how we solved them at DunaTech:

– **Stringing (threads between parts):** Set retraction to 4-6 mm and increase retraction speed to 40 mm/s.
– **Poor adhesion:** Use hairspray, Kapton tape, or a PEI bed surface to improve adhesion.
– **Warping on large parts:** Keep the bed heated between 70-80°C and consider using an enclosed printer to avoid drafts.

Frequently Asked Questions

Is PETG better than PLA for functional parts?

Yes, PETG is more impact resistant, more flexible, and better at handling heat than PLA. However, it is more challenging to print.

Do I need an enclosed printer to print PETG?

It’s not mandatory, but it helps, especially if you’re printing large parts or in drafty environments.

What’s the best temperature for PETG?

I recommend starting with 240°C for the nozzle and 70°C for the bed, adjusting as needed.

Conclusion

PETG is an excellent choice for functional parts due to its durability and chemical resistance. In our tests, Esun and Sunlu proved to be the most reliable brands, though each has its pros and cons. Adjust your settings and equip your printer with a good filament dryer like the Sovol for the best results.

— The DunaTech Team