PETG on Bambu Lab X1 Carbon

 Nozzle Temp

230 °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

@ 30 mm/s

Nozzle Type

Brass

Standard

  Retraction Note

• PETG is prone to stringing—increase retractions cautiously. Too much causes clogs.

 Settings

Recommended

Range

Nozzle Temperature

220 – 230 °C

210 – 230 °C

Bed Temperature

60 – 70 °C

50 – 70 °C

Print Speed

40 – 60 mm/s

up to 60 mm/s on this printer

First Layer Speed

20 – 25 mm/s

slower is better for adhesion

Layer Height

0.16 – 0.24 mm

0.12 – 0.28 mm

Fan Speed (Normal)

40 – 60 %

–

Fan Speed (1st Layer)

0 %

–

Retraction Distance

1.0 mm

Direct drive

Retraction Speed

30 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

Not required — helps in a cold or draughty room

Support Material

PVA, PLA (interface)

–

 Printing Notes

PETG is hygroscopic. A roll left open on the shelf for a week will string and pop no matter how well the retraction is tuned — dry it at 70 °C before blaming the settings.

Do not over-cool. PETG needs some fan for overhangs but too much destroys layer bonding, which is the whole reason to choose PETG over PLA.

The X1C ships with a hardened steel nozzle and a fully enclosed chamber, so it needs none of the modifications other machines do for this material.

Bambu Studio's own generic profile is a reasonable starting point, but its temperatures are set for Bambu filament — use the figures above for OzFDM spools.

Slicer: Bambu Studio / OrcaSlicer. Dry the filament at 70 °C / ≥ 5 h before a long print — every figure above assumes dry filament.

 Troubleshooting

Fine strings across the whole print — Dry the filament first, then drop the nozzle to 220 °C. Only tune retraction once those two are ruled out.

First layer digs in or looks squashed and glossy — PETG wants a slightly larger nozzle gap than PLA. Raise Z offset by about 0.02 mm.

Parts delaminate under load — Cooling is too high. Drop the fan to 30 – 40 % and raise the nozzle 5 °C.