Why does carbon fiber make PETG so much stiffer?
Short carbon fibers embedded in the PETG matrix act as microscopic reinforcement, sharply increasing stiffness and reducing creep and sag under load compared with plain PETG.
Full answers below
Yiqiu3D PETG-CF Carbon Fiber Filament 1.75 mm 1 kg High-Strength Black
Brand: Yiqiu3D · Model: PETG Carbon Fiber · PETG that sags under load has no place in production — carbon-fiber-reinforced PETG stiffens the polymer dramatically, so brackets and structural parts hold their shape under heat, stress and time.
- The deep matte black carbon texture hides layer lines and fingerprints
- Laser-measured 1.75 mm diameter with even carbon dispersion and vacuum-sealed packaging keeps extrusion consistent
- The 220 °C profile works with hardened steel nozzles on Bambu Lab and Creality machines
Diameter 1.75mm
Material PETG
Quick Answer
Is it right for my project?
Best for: Best where strength-to-weight matters: mechanical prototypes, tooling and end-use engineering parts - 1kg spools; lead colour PETG Carbon Fiber Black. Not ideal for: Avoid for flexible or high-impact-only applications; nylon or TPU may suit better - 1kg spools; lead colour PETG Carbon Fiber Black.
Print settings
Nozzle 230-250°C
01 · Why this one
Product highlights
3 reasonsThe deep matte black carbon texture hides layer lines and fingerprints, giving functional parts a professional, engineering-grade look that OEMs expect.
Laser-measured 1.75 mm diameter with even carbon dispersion and vacuum-sealed packaging keeps extrusion consistent, so fiber content never clogs or alters dimensions mid-print.
The 220 °C profile works with hardened steel nozzles on Bambu Lab and Creality machines, delivering rigid, low-warp parts with excellent chemical and moisture resistance.
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Technical Data
Specifications
| Diameter | 1.75mm |
|---|---|
| Material | PETG |
Print Profile
Yiqiu3D PETG-CF Carbon Fiber Filament 1.75 mm 1 kg High-Strength Black prints best at 230-250°C nozzle.
| Nozzle Temp | 230-250°C |
|---|
Spool Specification
Spool details for your feeding and handling setup.
| Gross Weight | 1.35 kg |
|---|---|
| Length | approx. 325m |
| Spool Size (L×W×H) | 21 × 21 × 7 cm |
| Pack Format | Piece |
| Spool Type | Round Spool |
What You Receive
Laser-measured 1.75 mm diameter with even carbon dispersion and vacuum-sealed packaging keeps extrusion consistent, so fiber content never clogs or alters dimensions mid-print.
- Vacuum-sealed bag
- Desiccant pack
- Arrives dry and ready to print
Attributes
| Country / Region | china |
|---|---|
| HS Code | 39169010 |
| Item No. | petg-cf-carbon-fiber-filament-high-strength-black-3d |
| Diameter | 1.75mm |
| Length | approx. 325m |
| Appearance | Round Spool |
Before You Ask
Frequently Asked Questions
Why does carbon fiber make PETG so much stiffer?
Short carbon fibers embedded in the PETG matrix act as microscopic reinforcement, sharply increasing stiffness and reducing creep and sag under load compared with plain PETG.
Do I need a special nozzle or printer?
Yes on Bambu Lab and Creality printers, but use a hardened steel nozzle (0.4-0.6 mm) because carbon fiber is abrasive and wears brass nozzles quickly.
What settings should I use?
Start at 220 °C nozzle, bed 70-80 °C, low cooling and a slightly larger nozzle opening; these give strong, warp-free carbon-fiber parts with good layer fusion.
How many parts can I print from a 1 kg roll?
A 1 kg roll of 1.75 mm filament delivers roughly 300-340 meters, enough for a series of structural brackets, jigs, drone frames or a small production batch.
Is the black color consistent and matte?
Yes — the deep black tone comes from a fixed masterbatch with even carbon dispersion, so parts look uniformly matte and professional across spools.
What speed works with carbon-filled PETG?
Keep speeds at 40-80 mm/s; carbon-filled material handles moderate speeds well, but too fast can weaken layer bonding on load-bearing parts.
Is this for prototypes or production parts?
Production-focused — it suits functional parts such as brackets, frames, fixtures and enclosures that need stiffness, low warp and moisture resistance in service.
How should carbon-fiber filament be stored?
PETG absorbs less moisture than nylon, but keep the spool vacuum-sealed with desiccant and store below 20% humidity for the cleanest carbon-fiber surfaces.
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