Sunlu TPU Silk filament black 1.75 mm 1 kg

SUNLU TPU Silk is a 3D printing filament that combines TPU flexibility with a silky smooth, gently glossy surface. It is ideal for durable functional parts as well as aesthetic models that withstand bending, impacts, and normal wear and tear.

Silky look and professional finish

Create parts with a smooth, slightly glossy surface that increases the aesthetic value of prints. Great for design models and presentation prototypes.

TPU flexibility and high durability in practice

The filament is resistant to bending, impacts, and wear, making it suitable for functional components designed to withstand everyday use.

Ability to fine-tune stiffness via print settings

Using infill and wall thickness, you can easily tailor the result: 0% infill for maximum softness, or 5–15% for higher strength and flexibility.

SUNLU TPU Silk (black) lets you print flexible components with an attractive “silk” look. Thanks to the balanced material properties, you can significantly influence the resulting stiffness and softness through print settings—from soft, flexible prints to firmer parts with higher durability.

The material features a longer cooling time, which supports better layer adhesion and contributes to higher model durability. For best results, it is especially suitable for medium-height models with fewer overhangs.

Recommendations for flexibility settings:

Maximum softness: 0% infill and wall thickness 0.8–1.2 mm
Higher strength and flexibility: 5–15% infill and wall thickness ≥ 1.2 mm
Print speed: direct extruder up to 50 mm/s with retraction or up to 60 mm/s without retraction; Bowden 20–30 mm/s

Specifications

Material: TPU Silk (thermoplastic polyurethane with a silky surface)
Color: Black
Filament diameter: 1.75 mm
Weight: 1 kg
Recommended print speed (direct extruder): up to 50 mm/s with retraction / up to 60 mm/s without retraction
Recommended print speed (Bowden): 20–30 mm/s
Infill settings: 0% for maximum softness / 5–15% for greater flexibility
Wall thickness: 0.8–1.2 mm for flexibility / ≥ 1.2 mm for greater stiffness
Material properties: Flexible and elastic, with adjustable hardness via print settings