PETG-CF Print Settings
Expert-recommended PETG-CF (PETG) settings for all Bambu Lab printers
Why use PETG-CF?
- Carbon fiber reinforced PETG for structural rigidity
- Better chemical resistance than PLA-CF
- Higher heat deflection than standard PETG
- Professional matte textured finish
- Good for outdoor functional parts needing stiffness
- More forgiving than PA-CF or PC while offering CF benefits
What are the best PETG-CF print settings?
Use default Bambu Lab temperature profiles for PETG-CF. Recommended outer wall speed is 150 mm/s.
| Setting | Value | Note |
|---|---|---|
| quality.lineWidth.default | 0.44 | Wider lines for CF fiber flow |
| strength.walls.wallLoops | 3 | Extra walls for CF structural strength |
| speed.layers.outerWall | 150 | Slower for CF surface quality |
| speed.layers.innerWall | 250 | Moderate speed for CF |
| speed.layers.sparseInfill | 400 | CF increases viscosity — slower infill |
| support.filament.interface | Support for PA/PET (Bambu Lab) | PA/PET interface for PETG-CF |
| support.filament.base | Same as model | PETG-CF as bulk support |
| quality.advanced.avoidCrossingWall | true | Prevents stringing on PETG-CF |
| support.thresholdAngle | 35 | PETG-CF needs lower overhang threshold |
| others.bed.brimType | Outer brim only | Helps with PETG bed adhesion |
What nozzle size should I use for PETG-CF?
0.4mm hardened steel REQUIRED — carbon fibers are abrasive
0.4mm hardened steel nozzle
0.6mm hardened steel for fast CF prints
How do I dry PETG-CF filament?
Dry PETG-CF at 65°C for 6-8 hours. Moderate — dry PETG-CF for best results with CF fibers
What support material should I use with PETG-CF?
Recommended: PETG-CF base + Support for PA/PET interface
Base: Same as model (PETG-CF) | Interface: Support for PA/PET (Bambu Lab)
PETG-CF as bulk support with PA/PET interface. CF texture actually helps base supports break away; dedicated interface ensures clean model separation.
~25% less support filament used
Expert Tips for PETG-CF
- Hardened steel nozzle is NON-NEGOTIABLE — CF will destroy brass within hours.
- Dry PETG-CF filament at 65°C for 6-8 hours before printing.
- PETG-CF is a great middle ground between PLA-CF (too brittle) and PA-CF (harder to print).
Which Bambu Lab printers work with PETG-CF?
Alternatives to PETG-CF
If you want the easiest-to-print carbon fiber option with good stiffness
Trade-offs: Lower heat resistance. Less chemical resistance. More brittle than PETG-CF
If you need maximum heat resistance and stiffness for industrial applications
Trade-offs: Requires enclosure (H2D only). Must dry filament thoroughly. Higher printing temperatures
If you need CF stiffness with UV resistance for outdoor structural applications
Trade-offs: Lower stiffness than PA6-CF. Still requires enclosure and hardened nozzle
Get your full PETG-CF profile
Use Print Advisor to generate a complete Bambu Studio-compatible JSON profile for PETG-CF, customized to your priorities and printer.
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