About this material
This spool feeds the FibreSeeker 3 CFC nozzle so you can lay continuous glass fiber into thermoplastic parts. Unlike chopped-fiber filament, the reinforcement is a full-length strand along the load path. Choose it when the part needs to take impact, stay electrically insulating, or stay RF-transparent. It is a FibreSeeker 3 consumable for CFC co-extrusion.
Filaments
Glass Fiber Spool
X-CGF 1K continuous glass fiber for the FibreSeeker 3
X-CGF is the continuous glass fiber reinforcement the FibreSeeker 3 prints through its CFC nozzle. It adds toughness, impact resistance, and electrically insulating reinforcement when co-extruded with PLA, PETG, nylon, or CFC-optimized matrix plastics.
- Process
- CFC printing on the FibreSeeker 3
- Compatible printer
- FibreSeeker 3
- Fiber
- Continuous glass (X-CGF 1K)
- Use with
- Nylon, PETG, and PLA — regular or CFC-optimized matrix plastics
- Storage
- Store at room temperature, No filament dryer needed
- Strength
- 714 ± 165 MPa tensile (X-CGF/CFC PLA, ASTM D3039)
Available to order
$149.99
Technical data — X-CGF 1K
X-CGF 1K enables consistent, smooth printing while giving printed parts outstanding tensile strength, stiffness, and dimensional stability for continuous glass fiber co-extrusion.
X-CGF for the FibreSeeker 3
X-CGF 1K is the continuous glass fiber the FibreSeeker 3 lays with Composite Fiber Co-extrusion (CFC). Use it with PLA, PETG, nylon, or CFC-optimized matrix plastics — regular or CFC packs both work.
Mechanical properties
X-CGF 1K mechanical properties with CFC matrix plastics (manufacturer TDS)
| Test metric | Method (ASTM) | X-CGF/CFC PLA | X-CGF/CFC PETG |
|---|---|---|---|
| Tensile strength (MPa) | D3039 | 714 ± 165 | 625 ± 48 |
| Tensile modulus (GPa) | D3039 | 31 ± 0.4 | 25 ± 1.7 |
| Tensile strain at break (%) | D3039 | 1.59 ± 0.73 | 2.36 ± 0.38 |
| Compressive strength (MPa) | D6641 | 133 ± 10.5 | 104 ± 5.5 |
| Compressive modulus (GPa) | D6641 | 26 ± 2.0 | 21 ± 3.8 |
| Compressive strain at break (%) | D6641 | 0.5 ± 0.03 | 0.49 ± 0.07 |
| Flexural strength (MPa) | D790 | 185.7 ± 20.8 | 144.5 ± 9.4 |
| Flexural modulus (GPa) | D790 | 17.7 ± 1.0 | 11.9 ± 0.7 |
- Standard coupons use a small amount of CFC co-extrusion matrix. Values are typical manufacturer TDS combinations — not 100% fiber and not Fibricate lab results.
- Mechanical data in this TDS is published for X-CGF/CFC PLA and X-CGF/CFC PETG only. Nylon (PA) may still be a compatible matrix for printing; it is not a tested strength column here.
Where to use it
Where to use X-CGF with each CFC matrix
| Filament combination | Characteristics | Scenarios |
|---|---|---|
| X-CGF/CFC PLA | Electrically insulating, moderate stiffness | Teaching test pieces, consumer goods frames, electronic brackets, low-cost jigs or fixtures, beginner prototypes, non-conductive structural parts |
| X-CGF/CFC PETG | High toughness, excellent impact resistance and insulation | Electrically insulated supports, outdoor equipment frame skeletons, tool grips, sports protective gear, impact-resistant fixtures, general industrial functional parts |
How X-CGF compares
On manufacturer TDS coupons, X-CGF/CFC PLA reaches about 714 MPa tensile strength and X-CGF/CFC PETG about 625 MPa — well above typical neat FDM plastics and many short-fiber filaments (often roughly 30–135 MPa tensile). Use X-CGF when you need continuous-fiber reinforcement with toughness, impact resistance, and electrical insulation rather than maximum carbon stiffness.
How these numbers were tested
ASTM D3039 (tensile), ASTM D6641 (compressive), and ASTM D790 (flexural / 3-point bending). Tensile coupon: 250 × 15 × 1 mm. Compression coupon: 140 × 13 × 4 mm. Flexural coupon: 127 × 12.7 × 3.2 mm. Equipment: UTM5504X-F universal testing machine, 50 kN load sensor. Loading rates: tensile 2 mm/min, compressive 1.3 mm/min, flexural 1.37 mm/min.
FAQ
- What is X-CGF?
- X-CGF (X-CGF 1K) is continuous glass fiber reinforcement for Composite Fiber Co-extrusion (CFC). It is a thermoset-prepreg tow that the FibreSeeker 3 co-extrudes with PLA, PETG, nylon, or CFC-optimized matrix plastics.
- Is X-CGF for the FibreSeeker 3?
- Yes. X-CGF is the continuous glass fiber the FibreSeeker 3 prints through its CFC nozzle. Fibricate sells this spool as a FibreSeeker 3 consumable.
- What type of material does the FibreSeeker 3 print?
- The FibreSeeker 3 prints continuous glass fiber (X-CGF) through its CFC nozzle, plus FFF plastics such as PLA, PETG, PC, PA, PACF, and PETGF. It also supports continuous carbon fiber (X-CCF) as a separate reinforcement spool.
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