Fine Tuner FT4 Bio, Hydrophobic Photoaccelerant up to 500 nm

Fine Tuner FT4 Bio is a hydrophobic (ultra-low water absorption) photo accelerant additive designed to increase cure speed in high-power SLA, DLP, LCD and Inkjet 3D printing systems.

The formulation provides fast curing kinetics across a broad spectral range (150–500 nm), covering far, medium and near UV as well as visible light sources including LEDs, lasers and DLP projectors.

Fine Tuner FT4 Bio is the hydrophobic counterpart of Fine Tuner FT4 Bio HP, offering similar kinetic performance with enhanced resistance to water absorption, making it particularly suitable for moisture-sensitive and hydrophobic systems.

• Density: 0.90–1.20 g/cm³, depending on formulation and, where applicable, selected version (ISO 1675)
• Moisture-sensitive or low water absorption applications
• Hydrophobic behaviour with ultra-low water absorption
• Hydrophobic additive with ultra-low water absorption
• Avoid overdosing to prevent overcure and loss of dimensional accuracy

• Increasing cure speed in hydrophobic 3D resin systems
• Bioplotting and biofabrication systems
• Low and medium power systems using higher additive loadings
• Suggested dosage in high-power systems: 0.5–1 wt%
• Suggested dosage in low-power systems: 1–2 wt%
• High loading option for low-power systems: >4–8 wt%
• Add progressively and mix thoroughly before evaluation
• High cure acceleration across UV and visible spectrum
• Suitable for moisture-sensitive biomedical applications
• Flexible performance tuning via dosage control
• Can be used in low-power systems at higher dosage

• High-power SLA and DLP printing workflows
• Recommended wavelength range: 150–500 nm
• Compatible with UV and visible light systems (LEDs, lasers, DLP projectors, daylight LCDs)
• Optimal for high-power printers (>8 mW/cm²)
• Optimized for high-power SLA and DLP systems
• Compatible with SLA, DLP, LCD, mLCD and Inkjet workflows
• Essential for printers with fixed exposure parameters
• Supports stable processing in resin systems

For water-soluble accelerant systems, refer to: Fine Tuner FT5 Bio WS.

Cure behaviour, print speed and final part performance depend on resin formulation, printer irradiance, wavelength, exposure conditions and post-processing workflow. Optimization must be performed under real printing conditions.

This product is supplied as a formulation additive for professional use in photopolymer engineering and additive manufacturing workflows. It is not a standalone printable material. Final part performance and suitability must be validated by the user according to the intended application.

Use these related 3Dresyns pages to navigate adjacent material and process routes within the same technical workflow.

• Photo-Accelerants and Photoreactivity Modifiers
• Photo-accelerants, Photoreactivity Modifiers & Light Blockers

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)