PET-CF slicer profiles are in progress, but they're a lower priority for us. Until then, start from your slicer's PET-CF or PETG-CF profile and use these settings.
Recommended settings
| Setting | Recommendation |
|---|---|
| Nozzle temperature | 290–310°C. Hotter gives stronger layers. See below. |
| Bed temperature | 80–100°C |
| Build plate | Smooth or textured PEI |
| Print speed | 40–80 mm/s |
| Layer height | 0.2 mm minimum |
| Part cooling | Off preferred; 20% maximum |
| Nozzle | Hardened steel or other abrasion-resistant nozzle, 0.5 mm or larger |
| Hotend | All-metal |
Why print hotter?
Many PET-CF profiles, including some printer presets, run too cool for our PET-CF. Parts look perfect but peel apart along the layers. Not all PET-CFs are the same, and ours needs more heat to bond well.
In independent testing by Edge of 3D, raising the nozzle from 285°C to 305°C, with nothing else changed, nearly tripled layer adhesion, and the parts still printed beautifully. See How print temperature affects strength.
If your printer tops out at 300°C, print at 300°C and slow down a little so the filament has more time to heat.
Printer notes
- Bambu Lab P1S and X1C: PET-CF prints well with a hardened nozzle. These printers max out at 300°C.
- Enclosed printers: A warm chamber helps layer bonding. Independent tests used a 65°C chamber with good results.
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