PETG+ on Prusa XL

Nozzle Temp

225 °C

Range: 210 – 230 °C

Bed Temp

70 °C

Range: 50 – 70 °C

Print Speed

50

mm/s · max 60

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

• Start at 1.0 mm. If PETG+ still strings once it is dry, try a slightly longer retraction or a nozzle 5 °C cooler.

Settings

Recommended

Range

Nozzle Temperature

220 – 230 °C

210 – 230 °C

Bed Temperature

65 – 70 °C

50 – 70 °C

Print Speed

40 – 60 mm/s

up to 60 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+ is modified PETG that prints at lower nozzle and bed temperatures than standard PETG: 210 – 230 °C and 50 – 70 °C. It still gives a 68 °C heat deflection temperature and a clean satin finish.

OzFDM rates PETG+ at 40 – 60 mm/s. That is slow for the XL, so large parts take a while; plan long jobs rather than raising the speed.

PrusaSlicer warns when the filaments in one job need very different bed temperatures. PETG+'s 50 – 70 °C bed overlaps PLA's 25 – 60 °C, so the two can share a 60 °C bed on a multi-tool XL.

Multi-tool: Prusa's default minimal purge for non-PLA materials is 35 mm³. Leave Ooze prevention on so parked PETG+ toolheads cool to their idle temperature.

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 between parts: Dry at 70 °C for 5 hours, then try 220 °C.

Poor bed adhesion: Wash the sheet with warm soapy water, wipe it with IPA and keep fingers off the print area. Run the bed at 70 °C for the first layer.

Prints stick too well and damage the sheet: Use glue stick as a release layer on smooth PEI, or print on the textured sheet. Drop the bed to 65 °C.