PLA+ Silk 3D printer filament, Sunlu, Brass color, high-gloss PLA+ for FDM printers

Sunlu PLA+ Silk in Brass is a high-gloss PLA+ filament formulated for FDM 3D printers. It produces prints with a smooth, silky sheen that reduces the need for post-print polishing and gives decorative models and prototypes an attractive, refined appearance. The material is compatible with common PLA print settings and intended for projects where surface finish and visual appeal are important.

Advantages

The filament delivers a glossy, silk-like finish and consistent dimensional accuracy that supports repeatable results. It feeds smoothly to reduce jams and nozzle clogs, exhibits low warping and minimal shrinkage, and does not require a heated bed for many applications. These characteristics make it easy to use for both beginners and experienced users while providing reliable layer adhesion and pleasant surface quality.

Suitable for

• Decorative models and display pieces
• Artistic and sculptural prints
• Prototypes and design models where surface finish matters
• Hobbyist and educational projects

When it may not be suitable

PLA+ Silk offers improved visual appearance but retains the typical thermal limits of PLA-based materials. It may not be suitable for functional parts that require high heat resistance or significant mechanical toughness. For applications exposed to temperatures near or above the material’s softening point, or for load-bearing mechanical components, consider engineering-grade filaments instead.

Key specifications

• Color: Brass
• Density: 1.25 g/cm³
• Vicat softening temperature: 54 °C
• Heat deflection temperature: 53 °C
• Melting temperature: 164 °C
• Melt flow rate: 9 g/10 min
• Tensile strength: 60.6 MPa
• Elongation at break: 6.3%
• Flexural strength: 65 MPa
• Flexural modulus: 2760 MPa
• Impact strength: 4.2 kJ/m²

How to use

Print Sunlu PLA+ Silk using standard PLA printing settings; typical nozzle temperatures are around the filament’s melting range, and many users will achieve good results without a heated bed. Ensure your printer’s filament path is clean and the extruder feeds smoothly to minimise the risk of jams. Calibrate extrusion and layer height for dimensional accuracy, and allow prints to cool between layers as needed to preserve the glossy surface. Post-processing such as light sanding or coating can be used if a different finish is required.

What to consider before purchase

• Intended use — not recommended for high-temperature or load-bearing parts
• Printer compatibility — designed for most FDM printers (Bambu Lab, Creality, Prusa, Anycubic and similar)
• Desired surface finish — Brass color provides a metallic, high-gloss look
• Thermal limits — softening temperature around 54 °C

Usage recommendations

Use calibrated extrusion settings and smooth filament feeding for best results; test a small model first to confirm temperature and cooling parameters that preserve the silk-like gloss.