ASA-CF (Carbon Fibre ASA) on Bambu Lab X1 Carbon

Nozzle Temp

270 °C

Range: 250 – 280 °C

Bed Temp

100 °C

Range: 100 – 110 °C

Print Speed

50

mm/s · max 60

Layer Height

0.20

mm · max 0.28

Fan Speed

10 %

1st layer: 0 %

1st Layer Speed

20

mm/s

Retraction

0.8 mm

@ 30 mm/s

Nozzle Type

Hardened

Required

Retraction Note

• Carbon fibre cuts stringing, so leave retraction at 0.8 mm. Longer retractions add clog risk with fibre-filled filament.

Settings

Recommended

Range

Nozzle Temperature

260 – 275 °C

250 – 280 °C

Bed Temperature

100 – 110 °C

100 – 110 °C (X1C bed maximum)

Print Speed

40 – 60 mm/s

data sheet: 40 – 60 mm/s

First Layer Speed

20 mm/s

slower is better for adhesion

Layer Height

0.16 – 0.24 mm

0.12 – 0.28 mm

Fan Speed (Normal)

0 – 20 %

–

Fan Speed (1st Layer)

0 %

–

Retraction Distance

0.8 mm

Direct drive

Retraction Speed

30 mm/s

–

Nozzle Type

Hardened steel (required)

0.6 mm is ideal, 0.4 mm works, never 0.2 mm

Dry Filament

80 °C for at least 5 h

dry thoroughly before every long print

Enclosure

Required, door and top glass closed

no chamber heater, so let the bed heat soak the chamber first

Support Material

HIPS, ASA-CF (interface)

–

Printing Notes

ASA-CF is abrasive, so print it only through a hardened steel nozzle. The X1C's stock 0.4 mm nozzle is hardened steel, but check any hotend you have swapped in.

OzFDM suggests a 0.6 mm hardened steel nozzle as the ideal size for ASA-CF, since a larger nozzle is less prone to fibre clogs. The figures above are for 0.4 mm. Do not use a 0.2 mm nozzle.

Bambu Lab advises against running third-party carbon fibre filament through the AMS, so feed it from the external spool holder. Parts are stiffer but more brittle than plain ASA.

The X1C has no chamber heater and its bed tops out at 110 °C. Close the door and top glass and let the bed heat soak for a few minutes before large prints. ASA-CF gives off fumes, so print in a ventilated room.

Slicer: Bambu Studio. Start from the Generic ASA filament preset and set the temperatures above. Every figure assumes dry filament, so dry at 80 °C for at least 5 h before a long print.

Troubleshooting

Intermittent under-extrusion or a partial clog: Fibre is packing in the nozzle. Dry the filament, clear the nozzle with a cold pull, and consider a 0.6 mm hardened steel nozzle.

Filament snaps in the feed path: ASA-CF is more brittle than plain ASA. Dry it and avoid tight bends in the PTFE tube.

Warping on long parts: Raise the bed to 110 °C, keep the door and top glass closed, heat soak the chamber before starting and add a brim.