PAHT-CF Print Settings
Expert-recommended PAHT-CF (Nylon) settings for all Bambu Lab printers
Why use PAHT-CF?
- Highest heat resistance of any Bambu filament (up to 170°C HDT)
- Carbon fiber reinforcement for extreme stiffness
- Professional-grade material for end-use industrial parts
- Excellent for under-hood automotive components
- Ideal replacement for machined metal prototypes
- Superior dimensional stability among nylon materials
What are the best PAHT-CF print settings?
Use default Bambu Lab temperature profiles for PAHT-CF. Recommended outer wall speed is 120 mm/s.
| Setting | Value | Note |
|---|---|---|
| quality.lineWidth.default | 0.46 | Wider lines for high-temp CF flow |
| strength.walls.wallLoops | 4 | Maximum wall loops for industrial-grade strength |
| strength.infill.density | 25 | Higher infill for structural applications |
| strength.infill.pattern | Gyroid | Gyroid for isotropic strength |
| speed.layers.outerWall | 120 | Slower for high-temp material quality |
| support.filament.interface | Support for PA/PET (Bambu Lab) | Mandatory — same-material interface bonds permanently at 280-300°C |
| support.filament.base | Same as model | PAHT-CF as bulk support |
| speed.layers.innerWall | 200 | Moderate speed for PA-CF |
| speed.layers.sparseInfill | 300 | Reduced speed for viscous CF material |
| speed.initial.layer | 25 | Very slow first layer for nylon adhesion |
| others.bed.brimType | Outer and inner brim | Essential — nylon warps significantly |
| others.bed.brimWidth | 10 | Wide brim for warping prevention |
| quality.precision.elephantFootCompensation | 0.25 | High bed temp causes more squish |
| support.thresholdAngle | 25 | Nylon droops more — lower threshold |
| support.advanced.topZDistance | 0.25 | Larger gap for easier support removal |
What nozzle size should I use for PAHT-CF?
0.4mm hardened steel — PAHT-CF is extremely abrasive
0.4mm hardened steel nozzle (H2D ships with hardened nozzle)
0.6mm hardened steel for faster industrial parts
How do I dry PAHT-CF filament?
Dry PAHT-CF at 80°C for 8-12 hours. Critical — nylon absorbs moisture within hours
What support material should I use with PAHT-CF?
Recommended: PAHT-CF base + Support for PA/PET interface
Base: Same as model (PAHT-CF) | Interface: Support for PA/PET (Bambu Lab)
PAHT-CF as bulk support with PA/PET interface. Mandatory interface material for complex geometries — same-material interface bonds permanently at 280-300°C.
~25% less support filament used
Expert Tips for PAHT-CF
- MUST dry filament at 80°C for 8-12 hours before printing. Moisture causes popping and poor layers.
- Enclosed printer MANDATORY — H2D is ideal, A1 cannot print this material.
- Hardened steel nozzle is REQUIRED — carbon fibers are extremely abrasive.
- Use Bambu's dedicated PA/PET support material for any overhanging features.
- This is Bambu's most demanding but highest-performance material.
Which Bambu Lab printers work with PAHT-CF?
Use with caution on: H2C, P1P, A1, A1 Mini, Ender 3 V3 SE
Alternatives to PAHT-CF
If you need ~80% of PAHT-CF performance at lower cost and easier printing
Trade-offs: Lower heat resistance than PAHT-CF. Slightly less stiff
If moisture sensitivity is your main concern — PET-CF is more moisture-tolerant
Trade-offs: Lower heat resistance than PAHT-CF. Different mechanical properties
Get your full PAHT-CF profile
Use Print Advisor to generate a complete Bambu Studio-compatible JSON profile for PAHT-CF, customized to your priorities and printer.
Open Print Advisor