Wood Filament Sunlu Wood Filament (Walnut) for FDM 3D Printers, PLA-based Composite, 1.75 mm

Sunlu Wood Filament (Walnut) is a PLA-based composite filament with a 1.75 mm diameter designed to give FDM 3D prints the appearance and texture of natural walnut. The material contains real wood particles, producing a subtle wood scent during printing and a matte, grain-like finish that suits decorative objects, prototypes and artistic pieces where an authentic wood look is required.

Advantages

The filament reproduces wood grain and a soft matte surface for a realistic, warm appearance. Its formulation improves flow and dimensional stability, enabling smooth printing with fine detail reproduction and low shrinkage. Consistent diameter and ±0.02 mm dimensional accuracy increase compatibility with most FDM printers and reduce feeding problems.

Suitable for

• Decorative ornaments and figurines
• Prototypes and concept models with wood-like finish
• Architectural and design mock-ups
• Artistic objects and small furniture details

When it may not be suitable

This wood-filled PLA is intended for decorative and visual applications rather than high-strength functional parts. Mechanical properties such as impact resistance and elongation are limited compared with engineering polymers, so it is not the best choice for load-bearing components or parts exposed to high temperatures.

Because it contains wood particles, the filament may require occasional adjustment of printing settings (nozzle temperature, retraction) and may wear abrasive nozzles over long-term use.

Key specifications

• Material type: PLA-based wood composite
• Colour / finish: Walnut, matte, wood-like grain
• Diameter: 1.75 mm
• Dimensional tolerance: ±0.02 mm
• Density: 1.10 g/cm³
• Recommended melt/printing temperature: around 164 °C (adjust per printer)
• Vicat softening temperature: 54 °C
• Heat deflection temperature: 54.4 °C
• Melt flow index: 3.2 g/10 min
• Tensile strength: 37 MPa
• Elongation at break: 3%
• Flexural strength: 65 MPa
• Flexural modulus: 3154 MPa
• Impact resistance (X–Y): 65 kJ/m²

How to use

Load the 1.75 mm filament into an FDM 3D printer configured for PLA-based materials. Start with standard PLA settings and a nozzle temperature around the listed melting temperature, then fine-tune temperature, print speed and retraction to optimise surface texture and detail. Print on a heated or unheated bed depending on adhesion needs; a glue stick or blue tape can improve first-layer adhesion. After printing, models can be sanded gently and finished with oil, wax or stain to enhance the wood effect.

What to consider before purchase

• Intended use: decorative vs. functional parts
• Printer compatibility with 1.75 mm filament and PLA-type materials
• Nozzle wear: wood particles can be slightly abrasive—consider hardened nozzles for extended use
• Post-processing: sanding and finishing may be required to achieve desired look

Usage recommendations

For best results, start with standard PLA print profiles and incrementally adjust nozzle temperature and print speed to balance surface texture and detail. Use moderate layer heights for visible grain, and sand or apply finishing oils to emphasise the walnut appearance.