PLA+ Silk Dual Color Filament (Black & Purple) — Sunlu — PLA+ dual-color 1.75 mm

Sunlu PLA+ Silk Dual Color Filament in Black & Purple is a 1.75 mm dual-color PLA+ material created for FDM 3D printers. The filament uses multi-color technology to produce prints that change appearance with viewing angle and light, combining the mechanical advantages of PLA+ with a glossy, silk-like surface. It is intended for decorative objects, figurines, prototypes and hobby projects where both visual effect and reliable extrusion are important.

Advantages

The filament provides a silky sheen and smooth finish that reduces the need for post-processing, while preserved dimensional accuracy and low shrinkage support consistent print results. Compared with standard PLA, this PLA+ variant offers improved strength, flexibility and impact resistance, allowing for durable prints without sacrificing visual quality. Uniform diameter and tight tolerances ensure good compatibility with most 1.75 mm FDM printers.

Suitable for

• Decorative models and figurines
• Multicolor or gradient visual effects without filament changes
• Prototypes and functional hobby parts requiring higher toughness
• Gadgets and display pieces with a glossy finish

When it may not be suitable

This silk PLA+ is optimized for appearance and general mechanical performance but is not intended for high-temperature or load-bearing applications that exceed its heat deflection or mechanical limits. For parts that require very high heat resistance or engineering-grade properties, alternative materials such as PETG, ABS or specific engineering filaments may be more appropriate.

Key specifications

• Diameter: 1.75 mm
• Colour: Black and purple (dual color)
• Density: 1.23 g/cm³
• Vicat softening temperature: 54 °C
• Heat deflection temperature: 57 ±3 °C
• Melting temperature: 164 °C
• Melt flow rate: 7 ±2.5 g/10 min
• Tensile strength: 50 ±4 MPa
• Elongation at break: 11 ±3%
• Flexural strength: 78 ±5 MPa
• Flexural modulus: 2600 ±300 MPa
• Impact resistance (X-Y): 78 ±5 kJ/m²
• Dimensional tolerance: ±0.02 mm

How to use

Load the 1.75 mm filament into a compatible FDM printer and set the nozzle and bed temperatures according to your printer and model; starting parameters around 200–220 °C for the nozzle and a non-heated or mildly heated bed are commonly used for PLA+, but adjust as needed for adhesion and surface quality. Print at moderate speeds to preserve the silk finish and ensure consistent extrusion. Store the spool in a dry place or sealed with desiccant to prevent moisture uptake, which can affect print quality.

What to consider before purchase

• Confirm your printer supports 1.75 mm filament and the recommended printing temperature range.
• Consider required thermal and mechanical properties for the intended application compared with this filament's temperature limits.
• For best visual results, test and tune print settings (temperature, speed, cooling) on small samples before large prints.

Usage recommendations

Use moderate nozzle temperatures and controlled print speeds to preserve the silk sheen; keep the filament dry and perform calibration prints to achieve optimal surface quality and dimensional accuracy.