3Dresyn IJ OTO-UHT Bio – Ultra-Hard & Tough Inkjet Resin

3Dresyn IJ OTO UHT BIO is an ultra hard and tough bio-based photopolymer formulation designed for high-performance inkjet 3D printing applications in otoplastics and advanced engineering workflows. The material is engineered to deliver very high rigidity, elevated mechanical strength and durable performance, enabling the fabrication of highly stable functional components.

This formulation provides a combination of high stiffness and very low elongation, supporting the production of rigid parts with excellent dimensional stability, wear resistance and high-resolution detail reproduction.

Designed for use in commercial and professional inkjet 3D printing systems within otoplastics, industrial and product development environments requiring ultra rigid, high-strength components.

• Otoplastic shells and rigid hearing device components
• Rigid engineering components
• Functional prototypes requiring very high stiffness
• Mechanical housings and structural parts
• High-resolution technical models

• Tensile strength: >30 MPa (ISO 527)
• Flexural strength: >50 MPa (ISO 178)
• Young’s modulus: 1500–2500 MPa (ISO 527)
• Elongation at break: <2% (ISO 527)
• Shore hardness: D85 (ISO 868)

• Density: 0.90–1.20 g/cm³, depending on formulation and, where applicable, selected version (ISO 1675)
• Printing shrinkage: no measurable dimensional shrinkage after calibration under validated processing conditions
• Resolution capability: very high
• Color stability: non-settling of color
• Inkjet viscosity: <20 mPas at 70°C and <15 mPas at 80°C (ISO 3219)

• Ultra hard and rigid material behavior
• High strength and structural integrity
• Excellent dimensional stability
• Low deformation under load
• High durability for functional applications
• Very high resolution for technical geometries

• Printing technology: inkjet 3D printing
• Compatible with most commercial and professional inkjet 3D printers
• Optimized viscosity for reliable jetting performance
• Supports stable processing and high-resolution output

• Bio-based formulation
• Organo-tin free formulation
• Biocompatible formulation for otoplastic workflows (final validation required)

Material properties are measured under controlled laboratory conditions and may vary depending on printer model, jetting temperature, printing conditions, build geometry and post-processing workflow.

This material is supplied as a professional manufacturing material for engineering and otoplastic workflows. It is not marketed as a finished medical device. Final part performance and suitability must be validated by the user according to the intended application and regulatory requirements.

This technical datasheet should be used together with the relevant processing, calibration, safety and workflow documentation available in the 3Dresyns® Resources section.

Access the 3Dresyns® Technical Resources (IFU, calibration, CRT, post-processing and troubleshooting)