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Glycol-modified polyethylene terephthalate

PETG filamentTough, wet-proof, forgiving.

PETG bends instead of snapping, shrugs off water and mild chemicals, and prints without a chamber. It asks for slower speeds and dry filament in exchange.

Process
FDM (filament)
Families
2
SKUs
5
Price
On request

Grades

The grades in this family.

Print settings and mechanical properties are published per grade. A colour change never alters these numbers.

PETG Core

The all-round shop material. It bends before it breaks, ignores water, and survives a workshop floor. Slow it down and it prints as cleanly as PLA.

Best for

  • Brackets and mounts
  • Sealed housings and water contact
  • Parts that get dropped

Watch out

Sticks to smooth PEI hard enough to pull chips out. Use a textured plate or glue as a release layer.

Dry storage

Print settings

Nozzle
235–250 °C
Bed
75–85 °C
Chamber
Optional
Speed
40–90 mm/s
Cooling
40–60 %
Drying
65 °C / 6 h
Diameter
1,75 mm

Print settings are the common starting window for this material class, not measurements. Calibrate with a temperature tower and a flow test on your own machine.

Properties

Density
1,24–1,25 g/cm³ISO 1183 · PolyMax™ – PolyLite™ PETG
Tensile strength
37,9–50,8 MPaISO 527 · XY · PolyMax™ – PolyLite™ PETG
Tensile modulus
2 117 MPaISO 527 · XY · PolyLite™ PETG
Elongation at break
8,4 %ISO 527 · XY · PolyLite™ PETG
Bending strength
69,6 MPaISO 178 · XY · PolyLite™ PETG
Heat deflection (HDT)
76–78 °CHDT 0,45 MPa · PolyMax™ – PolyLite™ PETG
Impact strength
2,6–11,6 kJ/m²ISO 179 · notched, XY · PolyLite™ – PolyMax™ PETG
Vicat softening
82–84 °CPolyMax™ – PolyLite™ PETG

Benchmarked on published grades: Polymaker PolyLite™ PETG, Polymaker PolyMax™ PETG · Polymaker · 27/08/2026

PETG-CF

PETG with carbon fibre: the stringing problem largely disappears, the stiffness climbs, and the finish comes off the plate matte and even.

Best for

  • Structural brackets
  • Tooling that sees moisture
  • Automotive interior fixtures

Watch out

Fibre lowers elongation from 18 % to around 6 %. Do not use it for living hinges.

Hardened nozzle 0.4 mm+Dry storage

Print settings

Nozzle
240–260 °C
Bed
75–85 °C
Chamber
Optional
Speed
40–80 mm/s
Cooling
30–50 %
Drying
70 °C / 8 h
Diameter
1,75 mm

Print settings are the common starting window for this material class, not measurements. Calibrate with a temperature tower and a flow test on your own machine.

Properties

Density
1,30 g/cm³ISO 1183 · Fiberon™ PETG-rCF08
Tensile strength
59,8 MPaISO 527 · XY · Fiberon™ PETG-rCF08
Impact strength
4,0 kJ/m²ISO 179 · notched, XY · Fiberon™ PETG-rCF08
Heat deflection (HDT)
68,6 °CHDT 0,45 MPa · Fiberon™ PETG-rCF08
Vicat softening
81,6 °CFiberon™ PETG-rCF08

Benchmarked on published grades: Polymaker Fiberon™ PETG-rCF08 · Polymaker · 27/08/2026

The properties on this page are values published in the named manufacturers' data sheets, measured on their grades to the standard printed against each row — not measurements of a ZORVA spool. Use them to compare material classes, not as an acceptance specification.

Questions

PETG, answered.

Why is my PETG stringy?

Almost always moisture, then temperature, then retraction. Dry the spool at 65 °C for 6 hours, drop the nozzle 10 °C, and raise retraction distance before you touch anything else.

Is PETG food safe?

The polymer is widely used in food packaging, but a 3D printed part is not. Layer lines trap bacteria, and nozzles, hot ends and pigments are not certified for food contact. Treat printed PETG as single-use or non-contact unless the whole chain is certified.

PETG or PLA for outdoor parts?

PETG, for water and impact. Neither is genuinely UV stable over years — PETG yellows and loses toughness in direct sun. For sustained outdoor exposure, ASA is the correct material.