PETG Basic on Prusa XL

Nozzle Temp

230 °C

Range: 220 – 240 °C

Bed Temp

75 °C

Range: 70 – 80 °C

Print Speed

80

mm/s · max 120

Layer Height

0.20

mm · max 0.28

Fan Speed

50 %

1st layer: 0 %

1st Layer Speed

20

mm/s

Retraction

1.0 mm

@ 35 mm/s

Nozzle Type

Brass

Standard

  Retraction Note

• PETG strings more readily than PLA. Use 1.0 mm on the Nextruder and dry the roll before going longer.

Settings

Recommended

Range

Nozzle Temperature

225 – 235 °C

220 – 240 °C

Bed Temperature

75 °C

70 – 80 °C

Print Speed

60 – 100 mm/s

up to 120 mm/s on this printer

First Layer Speed

20 mm/s

slower is better for adhesion

Layer Height

0.15 – 0.25 mm

0.10 – 0.28 mm

Fan Speed (Normal)

50 %

30 – 60 %

Fan Speed (1st Layer)

0 %

off for the first few layers

Retraction Distance

1.0 mm

Direct drive (Nextruder)

Retraction Speed

35 mm/s

30 – 40 mm/s

Nozzle Type

Brass (standard)

Brass is fine; hardened optional

Dry Filament

70 °C for 5 h

print from a dry box in humid weather

Enclosure

Not required

helps in a cold or draughty room

Support Material

PVA, PLA (interface)

load it in a second toolhead

Wipe Tower Minimal Purge

35 mm³

Prusa's default for non-PLA materials

Printing Notes

PETG Basic handles more heat than PLA, with a 74 °C heat deflection temperature against 53 °C for our PLAs. It suits brackets, clips and parts that sit somewhere warm.

PETG bonds very strongly to smooth PEI. Print on the textured or satin sheet, or wipe glue stick on the smooth sheet as a release layer.

PLA works as a support interface for PETG, a pairing Prusa has tested. Load PLA in a second toolhead and choose it as the support material/raft interface extruder in PrusaSlicer.

Multi-tool: Prusa's default minimal purge for non-PLA materials is 35 mm³. Damp PETG leaks from a parked, preheated nozzle, so dry the roll and leave Ooze prevention on.

Slicer: PrusaSlicer with the Prusa XL printer profile and a 0.4 mm nozzle. Dry the filament at 70 °C for 5 h before a long print; every figure above assumes dry filament.

Troubleshooting

Stringing and popping sounds while printing: Moisture. Dry at 70 °C for 5 hours and store the roll with desiccant afterwards.

Prints pull chips out of the sheet: Use glue stick as a release layer on smooth PEI, or switch to the textured sheet. Let the bed cool fully before removing the part.

Blobs on the part after a tool change: Dry the filament, check that Ooze prevention is on, and raise the minimal purge on the wipe tower in 10 mm³ steps.