3D Printer Filament Sunlu PLA+ High-Speed Red – PLA+ high-flow printing material

Sunlu PLA+ High-Speed Red is a PLA+ filament formulated for faster FDM/FFF 3D printing while retaining improved mechanical properties and good surface quality. The material offers enhanced flow and layer adhesion compared with standard PLA, making it suitable for rapid prototyping, concept models and decorative parts where appearance and durability are required. The filament is supplied in red and is intended for printers that accept 1.75 mm filament.

Advantages

Sunlu PLA+ High-Speed provides stabilized high-speed printing with reduced risk of typical issues such as nozzle clogging, bubbling, stringing and warping. The filament is evenly wound to ensure consistent feeding and fewer interruptions, and it delivers improved interlayer adhesion and vivid colour reproduction. Mechanical properties such as increased impact resistance and tensile strength contribute to more durable finished parts compared with many standard PLA grades.

Suitable for

• Rapid prototyping and concept models
• Decorative parts and visual models requiring vivid red colour
• Functional prototypes with moderate mechanical demands
• Everyday prints where reliable, tangle-free feeding is important

When it may not be suitable

This PLA+ is not intended for high-temperature applications where parts are exposed to temperatures above its heat deflection or Vicat softening range (around 53–54 °C). It is also not appropriate for parts that require very high elongation or extreme chemical resistance; for such use cases, alternative engineering polymers should be considered.

Key specifications

• Filament diameter: 1.75 mm (±0.02 mm dimensional accuracy)
• Density: 1.23 g/cm³
• Vicat softening temperature: 54 °C
• Heat deflection temperature (HDT): 53 °C
• Melting temperature: 164 °C
• Melt Flow Rate: 6.3 g/10 min
• Tensile strength: 64 MPa
• Elongation at break: 17 %
• Flexural strength: 86 MPa
• Flexural modulus: 2907 MPa
• Notched impact strength (X–Y): 3.5 kJ/m²; reported impact resistance up to ~8 kJ/m² in optimized conditions

How to use

Use Sunlu PLA+ High-Speed with FDM/FFF 3D printers configured for PLA+ or PLA-type materials and a 1.75 mm filament path. Typical printing involves a nozzle temperature suitable for PLA+ (refer to printer and filament guidance), moderate print speeds that take advantage of the material's high-flow characteristics, and standard layer heights and cooling to optimise surface finish. Ensure the filament is loaded without tangles and feed it steadily to minimise printing interruptions.

What to consider before purchase

• Verify your printer supports 1.75 mm filament and PLA/PLA+ materials
• Consider the operating temperature limits (Vicat/HDT ~53–54 °C) for end-use parts
• Check that red colour and mechanical properties meet your visual and functional needs

Usage recommendations

For best results print on a clean bed with appropriate adhesion (blue tape, glue stick or PEI as suitable), use recommended nozzle temperatures for PLA+, enable part cooling for fine detail, and keep filament dry to preserve consistent flow and layer adhesion when printing at higher speeds.