PETG Filament vs. PLA Filament: Which Is Right for You? COEX 3D

PETG vs. PLA : Which Is Right for Your Project?

Josh Bonnin

PETG vs. PLA : Which Is Right for Your Project?

When it comes to 3D printing filaments, two of the most popular choices are PETG and PLA. Both materials have their own unique properties and advantages, so it can be difficult to decide which one is right for your project.

Here is a table summarizing the key differences between PETG and PLA:

Feature PETG PLA
Strength & Durability Known for its toughness and durability, making it ideal for mechanical parts. It has a high tensile strength of 7250 psi. A more rigid material, but can be brittle. It's best suited for models and prototypes that won't be subjected to high stress.
Temperature Resistance With a softening temperature of 85°C, PETG can withstand higher temperatures before deforming, making it suitable for parts used in warmer environments. Has a lower temperature resistance, with a melting temperature between 145-160°C. It can lose its shape in direct sunlight or a hot car.
Ease of Printing Generally easy to print with, though it can be more prone to stringing than PLA. It requires a heated print bed and higher printing temperatures. One of the easiest filaments to print with, making it a favorite for both beginners and professionals. It is less prone to warping than other materials.
Price (1kg spool) $33.00 $24.00

PETG

PETG stands for glycol-modified polyethylene terephthalate. It is a strong, durable, and versatile material that is often used for functional prints. PETG is also resistant to water, chemicals, and heat, making it a good choice for outdoor applications.

Advantages of PETG:

  • Strong and durable
  • Resistant to water, chemicals, and heat
  • Easy to print with
  • Good layer adhesion
  • Low shrinkage
  • Can be sanded and painted

Disadvantages of PETG:

  • Can be stringy
  • Requires a heated bed
  • Can warp if not printed properly

PLA

PLA stands for polylactic acid. It is a biodegradable and renewable material that is often used for educational and prototyping prints. PLA is also easy to print with and has a smooth finish.

Advantages of PLA:

  • Biodegradable and renewable
  • Easy to print with
  • Smooth finish
  • Low odor
  • Non-toxic

Disadvantages of PLA:

  • Not as strong or durable as PETG
  • Not as resistant to water, chemicals, and heat
  • Can warp if not printed properly

Which Material Is Right for You?

The best material for you will depend on your specific needs and requirements. If you need a strong and durable material that is resistant to water, chemicals, and heat, then PETG is a good choice. If you are looking for an easy-to-print material with a smooth finish, then PLA is a good option.

 

Ultimately, the best way to decide which material is right for you is to experiment with both PETG and PLA and see which one you prefer.

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