MACK4D Flexura

FLEXURA is an almost unbreakable 3D printing resin with a thermoelastic memory effect. Specifically developed for custom-made hearing and swim protection, it has been tested for skin compatibility in accordance with ISO 10993‑10.

Applications

• Custom hearing protection
• Swim plugs / water sealing
• Comfortable in-ear earpieces
• Slightly elastic earmolds

Material advantages

• Shore D 75 – soft enough for comfort, firm enough for precision
• Memory effect adapts at 37 °C without losing shape
• Impact resistance 86.5 kJ/m² – nearly unbreakable
• Elongation at break 56 % & Flexural modulus 988 MPa (dry)
• Printable on 385 nm & 405 nm DLP/LCD systems (profiles included)

High transparency with no polishing – for maximum aesthetics

FLEXURA unfolds its full potential when used with high-gloss print platforms or light-scattering tray systems, such as the Ultra‑Gloss Tray from Asiga. This results in a clear, glossy surface straight from the printer – no manual polishing needed.

Your workflow advantages:

• Glossy surface right out of the printer – no post-processing required
• Significant time savings, ideal for all high-transparency applications
• Fewer visible print lines thanks to diffuse light scattering
• Perfect for high-aesthetic, transparent parts

FLEXURA is the ideal choice wherever perfect fit, visual clarity, and efficiency are required.

Technical specifications