When PLA just isn’t enough

As strong as ABS and easy to print like PLAPETG filament finds that sweet spot between the two staples of 3D filament printing. Unlike ABSPETG doesn’t emit a toxic odor and has few problems with warping or shrinking. Another bonus is its great layer of adhesion ability, its resistance to alcohols and solvents along with being more lightweight and flexible than ABS or PLA. Despite being a softer material than both ABS and PLA, it is incredibly strong with an impact resistance that far exceeds regular PLA prints.

So what is PETG?

PETG (also called copolyester) is a modified version of PET which is a plastic resin. It is the most commonly used plastic in the world. Its found in fibers in clothes, containers for liquids, foods, thermoforming for manufacturing, and in combination with glass fiber for engineering resins.
The modification into PETG is achieved by adding a second glycol during polymerization. The molecular structure is irregular; the resin is clear and amorphous with a glass transition temperature of 88 C (190 F). If you’re into chemistry, it’s known as Polyethylene Terephthalate-1, 4-cylclohexylenedimethylene terephthalate.

What are the benefits of PETG?

It’s more durable than regular PET which can also look hazy and become brittle. The added glycol prevents the material from crystallizing and becoming breakable. The new material is also highly impact-resistant.

These are the benefits of PETG filament for 3D printing:

  • PETG filament has the reputation of combining the benefits of ABS (stronger, temperature resistant, more durable) and PLA (easy to print) in one material.
  • The layer adhesion is usually excellent.
  • You can expect less trouble with warping or shrinking of your prints.
  • Also, you can have the material, prints and misprints recycled.
  • It is considered to be food-safe in nearly all countries.




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