Bambu Lab PLA-CF Carbon Fiber Filament 1.75mm 1KG – High Rigidity Matte Finish for Engineering and Prototyping
Bambu Lab PLA-CF is a carbon fiber reinforced PLA filament that combines the easy printability of standard PLA with significantly improved mechanical properties. The chopped carbon fibers increase bending strength by up to 68% and bending modulus by 67% compared to PLA Matte, making it ideal for parts requiring higher stiffness and structural rigidity without the complexity of engineering-grade nylons.
The carbon fiber content produces a premium matte finish with almost invisible layer lines, giving prints a professional appearance straight off the build plate. AMS compatible with low clogging risk even at high speeds. Requires a hardened steel nozzle to prevent wear.
PLA-CF Key Features
- 68% Higher Bending Strength – Significantly stiffer than standard PLA
- Premium Matte Finish – Near-invisible layer lines for professional look
- Easy to Print – Same PLA-level printability, beginner-friendly
- AMS Compatible – RFID-enabled, low clogging risk at high speed
- High-Speed Capable – Prints up to 250 mm/s
- Low Warping – Excellent dimensional stability like standard PLA
- Multiple Colors – Black, Burgundy Red, Matcha Green, Jeans Blue, Royal Blue, Iris Purple, Lava Gray
PLA-CF Printing Parameters
| Parameter | Recommended Value | Notes |
|---|---|---|
| Nozzle Temperature | 210 – 240°C | Start at 220°C and adjust |
| Bed Temperature | 45 – 65°C | 55-65°C for Textured PEI |
| Print Speed | Up to 250 mm/s | High-speed compatible |
| Cooling Fan | 50 – 100% | Active cooling recommended |
| Nozzle Requirement | Hardened Steel (0.4/0.6/0.8mm) | 0.2mm and stainless steel NOT compatible |
| Build Plate | Cool Plate / High Temp / Textured PEI | All Bambu Lab plates supported |
| Enclosure | Not Required | Open frame printers work fine |
PLA-CF vs PLA Matte – Mechanical Properties
| Property | PLA-CF | PLA Matte | Improvement |
|---|---|---|---|
| Tensile Strength (XY) | 38 MPa | 32 MPa | +19% |
| Bending Strength (XY) | 89 MPa | 53 MPa | +68% |
| Bending Modulus (XY) | 3950 MPa | 2366 MPa | +67% |
| Impact Strength (XY) | 23.2 kJ/m² | 19.3 kJ/m² | +20% |
| Bending Strength (Z) | 49 MPa | 32 MPa | +53% |
| Impact Strength (Z) | 7.8 kJ/m² | 6.6 kJ/m² | +18% |
Data source: Bambu Lab official TDS V3. Test orientation: XY = horizontal, Z = vertical.
Recommended Applications
- Functional Prototypes – Parts requiring higher rigidity than standard PLA
- Structural Brackets – Mounts, clamps, and load-bearing components
- Display Models – Premium matte appearance with minimal post-processing
- Drone Parts – Lightweight yet rigid frames and mounts
- Tool Holders – Workshop organizers and custom jigs
- Enclosures – Electronics housings with professional finish
PLA-CF Printing Tips
- Hardened Steel Nozzle Required – Carbon fiber is abrasive; brass nozzles will wear rapidly.
- Dry Before Use – 55°C for 8 hours in a dryer, or 65-75°C for 12 hours on X1 heatbed.
- No Enclosure Needed – PLA-CF prints well on open-frame printers.
- Annealing Optional – 55-60°C for 6-12 hours improves heat resistance.
- AMS Auto-Settings – RFID spool auto-configures optimal parameters.
PLA-CF Product Specifications
| Brand | Bambu Lab |
| Material | PLA-CF (PLA + Carbon Fiber) |
| Diameter | 1.75mm ± 0.03mm |
| Net Weight | 1kg per spool |
| Spool Type | Basic Reusable Spool (RFID-enabled) |
| AMS Compatible | Yes |
| Nozzle Requirement | Hardened Steel (0.4, 0.6, 0.8mm) |
| Drying | 55°C for 8 hours (blast oven) or 65-75°C for 12 hours (X1 heatbed) |
PLA-CF FAQ
Q: Do I need a hardened steel nozzle for PLA-CF?
A: Yes, the carbon fiber content is abrasive and will wear out brass nozzles quickly. Use a hardened steel nozzle in 0.4mm, 0.6mm, or 0.8mm size. Stainless steel nozzles are also not recommended.
Q: Can I use PLA-CF with the Bambu Lab AMS?
A: Yes, PLA-CF is fully AMS compatible with RFID auto-configuration. It has low clogging risk even at high printing speeds.
Q: How is PLA-CF different from PA-CF or PAHT-CF?
A: PLA-CF uses PLA as the base material, making it much easier to print (no enclosure, lower temperatures). PA-CF and PAHT-CF use nylon bases for higher temperature resistance and toughness, but require enclosed printers and are more moisture-sensitive. PLA-CF is the best choice when you need improved stiffness without the complexity of nylon-based filaments.
Q: Does PLA-CF need an enclosure?
A: No, PLA-CF has the same low warping characteristics as standard PLA and prints well on open-frame printers like the Bambu Lab A1 and A1 Mini.
Q: What build plates work with PLA-CF?
A: Cool Plate, High Temperature Plate, and Textured PEI Plate all work well. Use 45-65°C bed temperature depending on plate type.
Related Products
Explore more carbon fiber and engineering filaments:
- Carbon Fiber Filaments – All CF options
- Bambu Lab PLA – Standard PLA range
- Hardened Steel Nozzles – Required for CF filaments
- Bambu Lab Filaments – Browse full range










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