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eSUN PLA-GF White Glass Fiber Reinforced PLA Filament 1 kg eSUN PLA-GF White is a white glass fiber...
eSUN PLA-GF Glass Fiber Reinforced Filament for 3D Printing
eSUN PLA-GF is an engineering PLA filament reinforced with glass fiber for FDM/FFF 3D printing of rigid, dimensionally stable and wear-resistant parts. The material is based on PLA, but compared with regular PLA it offers higher stiffness, better deformation resistance, higher flexural modulus and improved wear resistance. PLA-GF is suitable for mechanical prototypes, temporary functional parts, gears, housings, brackets, mounting elements, electronic parts, automotive prototypes, technical mockups and engineering applications where standard PLA is too soft or not rigid enough.
The key feature of eSUN PLA-GF is glass fiber reinforcement. The glass fiber makes the filament stiffer and more stable, reduces deformation and helps print parts that require accurate shape, high rigidity and bending resistance. Unlike decorative PLA filaments such as PLA-Silk, PLA-Wood, PLA-Marble or PLA-Rock, PLA-GF is focused on technical performance rather than visual effects.
PLA-GF can be considered a bridge between standard PLA materials and more demanding engineering composites. It is easier to print than many nylon, ABS, ASA and high-temperature materials, but it requires more attention to nozzle wear, filament feeding and print settings because glass fiber is an abrasive filler.
What Is eSUN PLA-GF
PLA-GF means PLA Glass Fiber, or glass fiber reinforced PLA. It is a composite filament where PLA acts as the polymer matrix, while glass fiber increases stiffness, bending resistance, shape stability and wear resistance. This material is especially useful when the user wants to keep the relative ease of PLA printing but needs a more technical part.
Regular PLA is suitable for decorative models, educational projects, shape prototypes and simple household parts. But if a part needs to be stiffer, deform less, hold geometry better and resist friction, standard PLA may not be enough. In these cases, PLA-GF becomes a more suitable option.
eSUN PLA-GF is especially useful for parts that require stiffness rather than flexibility. It is not an elastic material and does not replace TPU, TPE or PEBA. It is designed for rigid parts that must keep shape, resist bending and work in moderately loaded mechanical assemblies.
Important Availability Note
The official eSUN page indicates that PLA-GF may be discontinued or temporarily out of stock. For a category page, it is better to use careful wording: PLA-GF availability depends on supply, production batch or custom order. If the material is available, it can be positioned as a technical filament for rigid and wear-resistant parts. If it is temporarily unavailable, suitable alternatives include PLA-ST, PLA-CF, PETG-CF, ABS-GF, PA-GF, PA-CF or PAHT-CF.
Main Advantages of eSUN PLA-GF
- Glass fiber reinforcement: the material contains glass fiber that increases stiffness and deformation resistance.
- High rigidity: PLA-GF holds shape better than regular PLA and bends less easily.
- High flexural modulus: suitable for parts where shape stability under load is important.
- Improved impact resistance: glass fiber improves mechanical behavior compared with basic PLA.
- Wear resistance: PLA-GF can be used for temporary functional parts, guides and gears.
- Good printability: the material keeps many advantages of PLA printing and usually does not require an enclosure.
- Technical white appearance: white PLA-GF is convenient for engineering prototypes, test parts and paint-ready models.
- Suitable for mechanical prototypes: useful for checking shape, fit and structural stiffness.
- Useful for electronics and automotive prototypes: suitable for housings, mounting frames, covers and test elements.
eSUN PLA-GF Color
Officially, eSUN PLA-GF is available in WHITE. This is a practical technical color for engineering prototypes, marking, visual inspection, painting and demonstration models. Unlike decorative PLA ranges, PLA-GF is not focused on a wide color selection. Its main value is rigidity, glass fiber reinforcement and functional performance.
| Official Color | Color Name | Visual Character | Best Applications |
|---|---|---|---|
| WHITE | White | Light technical shade, convenient for marking, surface inspection and painting | Mechanical prototypes, housings, mounting parts, electronics, automotive prototypes, paint-ready parts |
Applications of eSUN PLA-GF
PLA-GF is best suited for applications where stiffness, accurate geometry and deformation resistance are required. It is a material for technical models, not for flexible, decorative or high-temperature parts.
Mechanical Prototypes
PLA-GF is suitable for prototypes of brackets, guides, mounting plates, levers, fixtures, housings, connectors and parts that must be checked for shape, fit and rigidity. Thanks to glass fiber reinforcement, the material holds shape better than regular PLA.
Gears and Temporary Functional Parts
Because of improved wear resistance, PLA-GF can be used for gears, temporary mechanical components, guides, rollers, test assemblies and parts with moderate friction. It is not a replacement for industrial engineering plastics under long-term load, but it is useful for prototyping and temporary functional solutions.
Electronic Engineering
The material is suitable for electronic housings, PCB holders, mounting frames, covers, protective shells, panels, adapters, sensor mounts, laboratory fixtures and test components. If electrostatic discharge protection is required, dedicated ESD materials should be selected.
Automotive Prototyping
PLA-GF can be used for automotive mockups, fit-check parts, templates, brackets, decorative components, covers and prototypes. However, the material has limited heat resistance, so it is not suitable for hot zones, under-hood parts or components exposed to a very hot car interior in summer.
Production Aids
PLA-GF can be used for light-duty production aids: templates, jigs, guides, holders, locators, assembly fixtures and checking gauges. For permanent industrial use under high load, PA-CF, PAHT-CF, PETG-CF, ABS-GF or other engineering composites are better options.
Technical Specifications of eSUN PLA-GF
| Parameter | Value | Comment |
|---|---|---|
| Material type | PLA-GF / Glass Fiber Reinforced PLA | PLA filament reinforced with glass fiber |
| Glass fiber content | 15–20 %, product page states 16 % | Glass fiber increases stiffness, impact resistance and wear resistance |
| Diameter | 1.75 mm | Compatible with many modern FDM/FFF 3D printers |
| Spool weight | 1 kg | Standard spool weight |
| Color | WHITE | Official base color |
| Density | 1.31 g/cm³ | Higher than many standard PLA materials because of reinforcement |
| Melt Flow Index | 6.36 g/10 min at 190 °C / 2.16 kg | Indicates melt behavior |
| Tensile Strength | 59.27 MPa | Suitable for rigid technical parts |
| Elongation at Break | 7.99 % | The material is not flexible; avoid excessive deformation in design |
| Flexural Strength | 85.01 MPa | Important for brackets, levers, frames and housings |
| Flexural Modulus | 4414.89 MPa | Key indicator of PLA-GF’s high rigidity |
| IZOD Impact Strength | 10.16 kJ/m² | Higher than many regular PLA materials, but not a PA-CF replacement for heavy loads |
| Heat Distortion Temperature | 56 °C | Not suitable for long-term use in hot environments |
⚙️ Recommended Printing Parameters
| Parameter | Recommendation | Comment |
|---|---|---|
| Nozzle temperature | 190–230 °C | Start around 210–220 °C and adjust for layer adhesion and surface quality |
| Bed temperature | 45–60 °C | Helps stable first-layer adhesion |
| Cooling | 100 % | Good for surface quality; reduced cooling can be tested for strength |
| Print speed | 40–100 mm/s | Moderate speed is recommended for functional parts |
| Nozzle type | Hardened steel / ruby nozzle | Recommended because glass fiber is abrasive |
| Nozzle diameter | 0.4 mm or 0.6 mm | 0.4 mm suits most parts; 0.6 mm is convenient for larger technical components |
| Wall count | 4 or more for functional parts | Walls are often more important than very high infill |
| Infill | 20–60 % | 20 % for prototypes; higher values for loaded parts |
| Enclosure | Usually not required | Stable room temperature and protection from drafts are usually enough |
Hardware Recommendations
PLA-GF is an abrasive composite. This means that glass fiber gradually wears the nozzle and feeding components. If PLA-GF is printed through a regular brass nozzle, the nozzle opening may enlarge, part geometry may degrade and the surface may become less stable.
- Nozzle: hardened steel nozzle, ruby nozzle or another wear-resistant nozzle.
- Extruder gear: for long printing, a wear-resistant drive gear is recommended.
- Filament path: avoid sharp bends because PLA-GF is stiff.
- Bowden system: possible, but the longer the path, the more important smooth feeding becomes.
- Direct Drive: convenient for stable feeding and technical printing.
- Nozzle inspection: if surface quality or line consistency worsens, check nozzle wear.
PLA-GF Compared with Other eSUN Filaments
| Material | Main Feature | When to Choose | Limitations |
|---|---|---|---|
| PLA+ | Improved general-purpose PLA | Everyday printing, prototypes, household parts | Less rigid than PLA-GF |
| PLA-ST | Impact-resistant tough PLA | Clips, housings, impact-loaded parts | Less rigid than PLA-GF but tougher |
| PLA-GF | Glass fiber reinforced PLA | Rigid mechanical prototypes, temporary functional parts, gears, housings | Abrasive, requires wear-resistant nozzle, limited heat resistance |
| PLA-CF | Carbon fiber reinforced PLA | Rigid matte parts, carbon-like look, low deformation | Abrasive and may be more brittle |
| PETG-CF | Carbon fiber reinforced PETG | Practical technical parts with good stability | Requires PETG tuning and wear-resistant nozzle |
| ABS-GF | Glass fiber reinforced ABS | Rigid parts with higher heat resistance than PLA-GF | Harder to print, enclosure recommended |
| PA-CF / PA-GF | Nylon composites | Serious engineering, wear-resistant and loaded parts | Require drying, high temperature and stable printing |
Limitations of eSUN PLA-GF
- Abrasive behavior: glass fiber wears brass nozzles and feeding components.
- Limited heat resistance: the material is not suitable for hot zones or long-term heating.
- Filament stiffness: sharp bends in the feeding path may cause feeding problems.
- Not for flexible parts: if elasticity is required, choose TPU, TPE or PEBA.
- Not for heavy industrial loads: for long-term service, consider PA-CF, PAHT-CF, PA-GF or other engineering materials.
- Not for permanent outdoor use: for UV and weather exposure, ASA or other weather-resistant materials are better.
FAQ About eSUN PLA-GF
Is eSUN PLA-GF regular PLA?
No. PLA-GF is PLA reinforced with glass fiber. It is stiffer, more dimensionally stable and more wear-resistant than regular PLA.
How much glass fiber does PLA-GF contain?
The official product page states 16 % glass fiber, while the technical data sheet lists a range of 15–20 %.
What color is eSUN PLA-GF?
The official eSUN PLA-GF color is WHITE. It is a technical white color for prototypes, housings, engineering parts and paint-ready models.
Does PLA-GF require a special nozzle?
Yes. A hardened steel, ruby or other wear-resistant nozzle is recommended because glass fiber wears regular brass nozzles quickly.
Can PLA-GF be printed on a regular 3D printer?
Yes, if the printer supports 1.75 mm filament, 190–230 °C nozzle temperature and a 45–60 °C heated bed. For regular printing, a wear-resistant nozzle is required.
Is PLA-GF suitable for gears?
PLA-GF can be used for temporary functional parts and gears, especially during prototyping. For long-term load and wear, nylon or other engineering materials are better choices.