Posted on Leave a comment

what is the difference between PLA and PETG in 3d printing filaments?

PLA (Polylactic Acid) and PETG (Glycol-Modified PET) are both popular filaments for 3D printing, but they have some differences in terms of their properties and suitability for different applications.

  1. Material Properties:
  • PLA is a biodegradable plastic made from renewable resources, such as cornstarch. It is a relatively stiff and brittle material, but it is also easy to print and has a low tendency to warp or shrink.
  • PETG is a modified version of PET (Polyethylene Terephthalate) that has added glycol. It is a tough, flexible, and strong material with good impact resistance. It has a higher melting point than PLA, which makes it more suitable for functional parts that need to withstand higher temperatures.
  1. Printing Parameters:
  • PLA is generally easier to print than PETG. It requires a lower printing temperature and does not need a heated bed. It is also less prone to stringing or oozing during printing.
  • PETG, on the other hand, requires a higher printing temperature and benefits from a heated bed. It is also more prone to stringing or oozing during printing, which can affect the quality of the finished part.
  1. Applications:
  • PLA is suitable for a wide range of applications, including toys, figurines, and decorative objects. It is also commonly used in educational settings due to its ease of use and biodegradability.
  • PETG is more suitable for functional parts that require strength, durability, and impact resistance. It is often used for parts that will be exposed to mechanical stress, such as phone cases, water bottles, and automotive parts.

In summary, PLA is a more rigid and easy-to-print material that is suitable for non-functional objects, while PETG is a more flexible and durable material that is suitable for functional objects that require strength and impact resistance.

Leave a Reply

Your email address will not be published. Required fields are marked *