Bambu Lab TPU 85A Black 1kg

Bambu Lab TPU 85A is the softest TPU filament in the Bambu Lab portfolio and is designed for printing parts that must be very flexible, durable, and dimensionally stable at the same time. The Black variant is a versatile choice for functional and design applications where a combination of high flexibility, vibration damping, and long service life is needed.

Main features

• Shore hardness 85A – very soft and highly flexible TPU, suitable for parts that must bend, compress, and absorb shocks.
• Excellent abrasion resistance – ideal for mechanically stressed functional parts that come into contact with friction.
• Excellent flexibility and return to original shape – parts return to their original shape after deformation, suitable for shock absorbers, seals, and protective elements.
• Good layer adhesion – ensures high strength even for thin-walled, flexible models.
• Original Bambu Lab material – consistent quality, verified printing parameters, and compatibility with Bambu Lab printers (especially P1, X1, H2D; for A1/A1 mini, TPU 90A is rather recommended).
• Wound on a durable ABS spool – dimensionally stable spool with heat resistance of approx. 90 °C, suitable for longer printing tasks.

Recommended Use

This filament is ideal for producing:

• Shock absorbers, bumpers, silent blocks, and anti-vibration pads
• Protective covers, cases, bumpers, and edge protectors
• Handles, grips, holders, and ergonomic grips
• Seals, bellows, grommets, and soft connectors
• Flexible parts of footwear, sports and outdoor accessories

Thanks to the black color, the filament is suitable for technical, discreet, or design-clean parts where there is a need to hide dirt and wear at the same time.

Printing Recommendations

To achieve the best results, we recommend:

• Dry filament – TPU is highly hygroscopic, dry it before printing according to the manufacturer's recommendations.
• Reduced printing speed compared to PLA/PETG to prevent under-extrusion and unstable flow.
• Direct feed (direct drive) or the smoothest possible filament path to minimize resistance during feeding.
• Use original or verified Bambu Lab TPU 85A print profiles and subsequently fine-tune speed, flow, and retractions according to the specific printer.

Warning: This filament is not compatible with AMS / AMS Lite and is generally more demanding to set up than harder TPU (e.g., 90A, 95A). It is more suitable for experienced users or for printing on machines where TPU 85A can be officially recommended.

Advantages of TPU 85A over harder TPUs

• Softer material – excellent vibration and shock damping.
• Higher comfort when touched – soft grips, sleeves, ergonomic parts.
• Better bending without cracking – suitable for repeatedly stressed, flexible parts.

If you are looking for a black, very flexible and high-quality TPU filament, Bambu Lab TPU 85A Black is a great choice for demanding technical and design projects.

Technical specifications

• Manufacturer: Bambu Lab
• Material: TPU (thermoplastic polyurethane)
• Shore hardness: 85A (very soft TPU)
• Filament diameter: 1,75 mm (tolerance ±0,05 mm)
• Net filament weight: 1 kg
• Color: Black
• Purity and consistency: high, intended for FDM/FFF 3D printing
• Spool: ABS, diameter approx. 200 mm, height approx. 67 mm
• Manufacturer's recommendation: dry filament before printing; incompatible with AMS / AMS Lite

Recommended printing conditions*

(*specific ranges may vary slightly depending on the printer and profile)

• Nozzle temperature: approximately 230–260 °C
• Bed temperature: approximately 40–60 °C
• Printing speed: lower than PLA/PETG, typically approx. 20–60 mm/s (depending on profile and part geometry)
• Cooling: medium, according to profile and required strength

These values serve as a starting point and we recommend adjusting them according to the specific printer, nozzle, and model shape.

Key features:

• Very flexible TPU filament with Shore 85A hardness for maximum bending and shock damping
• High resistance to abrasion and repeated mechanical stress
• Consistent quality and 1,75 mm diameter thanks to original Bambu Lab production
• Excellent layer adhesion even for flexible, thin-walled parts
• Black design suitable for technical, functional, and design parts
• Filament on a durable ABS spool, ready for professional use
• Ideal for shock absorbers, seals, protective covers, grips, and anti-vibration elements