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Choosing the right filament for your 3D print job is a tough decision to make as there are so many different ones out there. So in order to make a good choice that fits your needs, it is good to know which features the different material have. Today we want to point out the features of PETG filament, a common 3D printing material, though not yet well known by everyone.

PETG is a modified version of PET combined with Glycol. PET itself is a material we all know from everyday lives as it is the material plastic bottles are made of. Combining it with Glycol makes it highly recommendable thermoplastic for 3D printing.

The Benefits of PETG filament

One of PETG’s beneficial printing attributes is its low melting temperature as well as it’s lower viscosity. In addition, it also won’t become brittle when heated. All in all, you can print at a relatively high speed while the printing process is also easy. Here are some more qualities of PETG:

  • Excellent layer adhesion
  • Warp resistance
  • Reduced shrinkage
  • Higher density
  • Chemical resistance
  • Flexible printing on glass, acrylic, blue tape and polyamide tape
  • And it is odorlessness during printing

As a result, the finished product will have an excellent surface finish and will be virtually unbreakable in the layer direction. Compared to other materials, PETG produces are pliable and more impact-resistant product and therefore, is ideal for prints needing to be tough, durable, flexible and impact resistant. As it has a low shrinkage, the material is also highly recommended when printing larger items.

Looking at its aesthetic qualities, PETG has the benefit of being transparent – just like a plastic bottle. With a smooth finish, the co-polyester can be dyed and even bright colours are possible. The finished print will have a nice, glossy finish with minimal post-processing. Therefore, and in regard of its flexibility, PETG is especially an appropriate choice for printing creative or intricate kitchenware designs. But not to forget about the filament’s high impact-restistant which also makes a highly used 3D printing material in Robotics technology, where all these qualities are needed.

PETG vs. PLA

Comparing PETG to PLA, which we presented in our last blog post, both materials have a similar print speed. The melting point of PETG is higher, but both are relatively easy to print. Compared to ABS, PETG is more flexible, durable and ordourless, while ABS is harder.

Looking at all the different attributes and benefits of PETG, it can definitely be a cost-effective alternative to other common filaments. As it is easy to print with, the filament is also suitable for everyone new in the maker community and the smooth finish makes it also highly applicable for creative designs.

What do you think?

So what is your opinion, do you use PETG? What do you use it for? Leave a comment to share your thoughts!

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