PETG

Also known as: Polyethylene Terephthalate Glycol, PETG Filament

beginner Materials

A durable, food-safe filament combining ease of PLA with strength approaching ABS.

PETG (Polyethylene Terephthalate Glycol) is a popular filament that bridges the gap between PLA’s ease of use and ABS’s durability. It’s the “G” (glycol-modified) version of PET, the plastic used in water bottles.

Advantages

  • Durable - More impact resistant than PLA
  • Flexible - Bends before breaking
  • Chemical resistant - Safe for many applications
  • Food safe - When printed correctly
  • Low warping - Easier than ABS
  • Good layer adhesion - Strong prints
SettingValue
Nozzle Temp230-250°C
Bed Temp70-85°C
Print Speed30-50mm/s
Cooling50% or less

Challenges

  • Stringing - Very prone to oozing; dial in retraction
  • Sticks to bed TOO well - Can damage PEI; use glue stick as release
  • Hygroscopic - Absorbs moisture easily; dry before printing
  • Glossy finish - Shows layer lines more than matte filaments

Tips

  • Print slower than PLA for best results
  • Use less cooling than PLA (or none)
  • Add a release agent on PEI beds
  • Dry filament if you hear popping/crackling
  • Lower retraction settings to reduce stringing

Best Uses

  • Mechanical parts
  • Outdoor items
  • Food containers (check manufacturer)
  • Phone cases
  • Anything needing durability