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Material guide

PETG

Polyethylene Terephthalate Glycol

PETG is a material family used for mechanical parts, holders, clamps, and water-resistant prints when a less brittle result than typical PLA is useful.

Guide available
PETG filament spool with example printed objects in a workshop

Understand the scope

Family guidance, not a universal profile

Standard PETG and high-flow PETG are not interchangeable. Additives, color, and high-speed formulations can change the required profile.

Where it is commonly considered

Applications

  • Mechanical parts, holders, and clamps
  • Water-resistant containers and functional prototypes
  • Parts where low warping and layer bonding are useful

Plan around these constraints

Limitations

  • Prone to stringing and oozing
  • Can bond too aggressively to some smooth PEI sheets
  • Moisture can worsen print quality

Before printing

Equipment and handling

  1. 01

    Use a compatible sheet and any specified separator

  2. 02

    Dry the exact product when its documentation or symptoms call for it

  3. 03

    Use the product preset rather than a generic PETG temperature alone

Documented examples

Product and printer workflows

These are source-scoped starting points, not universal settings.

All settings
Printer-scoped workflow

Bambu PETG HF on X1 Carbon

Bambu PETG HF tested by Bambu Lab on an X1 Carbon with a 0.4 mm nozzle and 0.20 mm layer height. These values do not cover other PETG formulations.

Nozzle
230-260 °C
Bed
65-75 °C, with glue
Print speed
Below 300 mm/s
Drying
65 °C for 8 h before printing
  • Use the manufacturer's current PETG HF preset where available.
  • Bambu lists storage/printing humidity below 20% RH.
Printer-scoped workflow

Prusa PETG guidance on original MK4

Manufacturer material guidance explicitly marked relevant for the MK4 family, shown for the original MK4 stock 0.4 mm nozzle. It is not a universal PETG profile.

Nozzle
230 °C first layer; 240 °C later
Bed
85 °C first layer; 90 °C later
Build surface
Textured or satin PEI sheet
  • PETG can adhere too strongly to smooth PEI; follow Prusa's separation guidance.

Source notes

Primary documentation

Source dates show when FilamentMap last checked the linked documentation. They do not imply independent product testing.

01
Prusa PETG material guide

MK4-family temperature guidance, sheets, mechanical uses, low warping, stringing, and strong sheet adhesion.

Checked 2026-09-26