PET-G CF
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PET-G CF represents a groundbreaking fusion of PET-G and Carbon Fiber (10%), delivering exceptional mechanical properties that surpass traditional PET-G by remarkable margins. This advanced filament achieves 3 times greater elastic modulus and double the break resistance of standard PET-G, setting new standards for technical 3D printing materials. The result is a high-performance composite that combines strength, rigidity, and lightweight characteristics in one versatile filament.
Featuring outstanding resistance to wear, impact, and temperature extremes, PET-G CF also offers anti-static properties and superior chemical resistance. While compatible with most FDM 3D printers, optimal results are achieved using hardened steel or ruby-type nozzles to prevent erosion. Each print delivers professional-grade parts with exceptional mechanical properties and an attractive matte black finish, perfect for demanding technical applications.
Key Features
- Enhanced Properties: Carbon fiber reinforced PET-G
- Superior Strength: 3x elastic modulus, 2x break resistance
- Technical Grade: Anti-static and chemical resistant
- Temperature Resistant: Excellent heat and cold tolerance
- Professional Finish: Sleek matte black appearance
- Special Note: Requires hardened/ruby nozzle
Professional Applications
- Industrial Components: Electronics enclosures and machinery parts
- Transportation: Automotive and bicycle components
- Medical Equipment: Prosthetics and orthopedic mechanisms
- Consumer Products: High-strength casings and accessories
- Technical Parts: Impact-resistant structural components
Complete Technical Printing Guide - PETG CARBON FIBER
🌡️ 1. Material Preparation
Filament Drying (CRUCIAL):
- 📏 Temperature: 55°C
- ⏱️ Minimum time: 1 hour
- 💡 Proper drying is essential for optimal printing results
⚡ 2. Understanding Print Speed
Volumetric vs. Linear Speed
- 🌊 Volumetric Speed (mm³/s): Like water through a hose - measures how much plastic flows per second, regardless of nozzle size.
- 📏 Linear Speed (mm/s): Like walking speed - how fast the printer head moves across the print area
- 🔑 Key Formula: Linear Speed = Volumetric Speed / (Line Width × Layer Height)
✨ The Magic: When you set a volumetric speed limit in your slicer, it automatically calculates and adjusts all linear speeds (perimeters, infill, etc.) based on your current nozzle size and layer height. This ensures consistent material flow regardless of your print settings!
⚙️ 3. Basic Parameters
Unique Characteristics of PETG-CF
PETG reinforced with carbon fiber provides enhanced stiffness and dimensional stability. The addition of carbon fiber requires the use of hardened steel nozzle.
| Nozzle | Layer Height | Line Width | Volumetric Speed | Temperature |
|---|---|---|---|---|
| 0.4mm | 0.2mm | 0.42mm | 9.0 mm³/s | 250°C |
| 0.6mm | 0.3mm | 0.62mm | 20.3 mm³/s | 250°C |
| 0.8mm | 0.4mm | 0.82mm | 36.0 mm³/s | 252°C |
| 1.0mm | 0.5mm | 1.02mm | 56.3 mm³/s | 255°C |
🚀 4. Speed Settings
⚠️ NOTE: Due to the abrasive nature of carbon fiber, lower speeds are recommended compared to standard PETG to minimize wear and ensure proper layer adhesion.
0.4mm Nozzle (Volumetric Speed: 9.0 mm³/s)
| Line Type | Percentage | Speed |
|---|---|---|
| External Perimeter | 50% | 53.57 mm/s |
| Internal Perimeters | 75% | 80.36 mm/s |
| Infill | 100% | 107.14 mm/s |
| Top/Bottom | 60% | 64.29 mm/s |
| First Layer | 30% | 32.14 mm/s |
0.6mm Nozzle (Volumetric Speed: 20.3 mm³/s)
| Line Type | Percentage | Speed |
|---|---|---|
| External Perimeter | 50% | 54.57 mm/s |
| Internal Perimeters | 75% | 81.85 mm/s |
| Infill | 100% | 109.14 mm/s |
| Top/Bottom | 60% | 65.48 mm/s |
| First Layer | 30% | 32.74 mm/s |
0.8mm Nozzle (Volumetric Speed: 36.0 mm³/s)
| Line Type | Percentage | Speed |
|---|---|---|
| External Perimeter | 50% | 54.88 mm/s |
| Internal Perimeters | 75% | 82.32 mm/s |
| Infill | 100% | 109.76 mm/s |
| Top/Bottom | 60% | 65.85 mm/s |
| First Layer | 30% | 32.93 mm/s |
1.0mm Nozzle (Volumetric Speed: 56.3 mm³/s)
| Line Type | Percentage | Speed |
|---|---|---|
| External Perimeter | 50% | 55.20 mm/s |
| Internal Perimeters | 75% | 82.79 mm/s |
| Infill | 100% | 110.39 mm/s |
| Top/Bottom | 60% | 66.24 mm/s |
| First Layer | 30% | 33.12 mm/s |
↩️ 5. Retraction Settings
🚀 IMPORTANT: Due to the carbon fiber content, lower retraction speeds are recommended to minimize filament abrasion. Z-hop is recommended to prevent nozzle marks on the surface.
| Nozzle | Distance | Speed | Z-Hop |
|---|---|---|---|
| 0.4mm | 0.8-1.5mm | 30mm/s | 0.2mm |
| 0.6mm | 0.8-1.5mm | 30mm/s | 0.2mm |
| 0.8mm | 0.8-1.5mm | 30mm/s | 0.2mm |
| 1.0mm | 0.8-1.5mm | 30mm/s | 0.2mm |
🌡️ 6. Bed Temperature Settings
Bed Temperature:
- First Layer: 90°C
- Other Layers: 85°C
Chamber Temperature (if available):
- Recommended: 45-50°C
- Minimum: Room temperature with no drafts
❄️ 7. Cooling Settings
Cooling Configuration:
- First Layer: 0% (fan off)
- General Printing: 0% base fan speed
- Bridges and Overhangs: 40% fan speed
- Layers < 16 seconds: 40% fan speed
- Keep Fan Always On: OFF
- Force Fan Speed for Overhangs: OFF
- Minimum Layer Time: 15 seconds
- Maximum Fan Speed: 40%
- Layer adhesion is crucial for structural integrity
- Minimal cooling helps maintain layer bonding
- Only use cooling for bridges and overhangs
- Monitor first few layers for proper adhesion
Fan Speed Settings:
Advanced Settings:
Important Considerations:
🔧 8. Troubleshooting Guide
| Problem | Solution |
|---|---|
| Nozzle Wear | 1. Use hardened steel or ruby nozzle 2. Check nozzle condition regularly 3. Replace nozzle when diameter increases 4. Monitor extrusion consistency |
| Poor Layer Adhesion | 1. Increase temperature by 5-10°C 2. Reduce cooling fan speed to 0% 3. Check for proper drying 4. Reduce print speed |
| Bed Adhesion Issues | 1. Increase bed temperature to 90°C 2. Use PEI or textured surface 3. Clean bed with IPA 4. Use brim for large parts |
| Under-extrusion | 1. Check for nozzle wear 2. Increase temperature 3. Reduce print speed 4. Verify filament is dry |
| Stringing | 1. Optimize retraction settings 2. Reduce temperature 3. Ensure filament is dry |
✨ 9. Best Practices
- Use hardened steel or ruby nozzle (mandatory)
- PEI or textured build plate recommended
- Enclosed chamber preferred
- Direct drive extruder recommended
- Store in dry environment (humidity < 50%)
- Dry at 65°C for 4-6 hours before use
- Use sealed container with desiccant
- Handle with care to avoid carbon fiber splinters
- Monitor nozzle wear and replace regularly
- Use slightly increased Z-offset (+0.05mm)
- Clean nozzle frequently during long prints
- Consider using wipe tower for long prints
- Print outer walls slower for better finish
- Minimize cooling for better layer adhesion
- Use brim for large parts
- Consider higher infill percentages (> 40%)
- Wear gloves when handling parts
- Sand in well-ventilated area
- Use wet sanding to minimize dust
- Clean parts thoroughly after sanding
🛠️ Hardware Requirements
🌡️ Material Care
⚙️ Print Setup
🎯 Quality Optimization:
🔬 Post-Processing:
⚠️ IMPORTANT SAFETY NOTE: Carbon fiber reinforced materials require special handling considerations. Always use proper safety equipment including gloves when handling the filament or sanding printed parts. Print in a well-ventilated area and maintain proper nozzle maintenance to ensure safe and successful printing.
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