Flame retardant photopolymer resin for micro-scale parts requiring UL94 V-0 fire safety certification.
BMF FR Resin is a flame retardant photopolymer developed by Boston Micro Fabrication (BMF) for use with their Projection Micro Stereolithography (PµSL) platform. It carries a UL94 V-0 flammability rating at 2.0mm, which is the highest standard flame retardancy classification, meaning the material self-extinguishes rapidly when a flame source is removed and produces no dripping that could spread fire.
Alongside that fire safety performance, FR Resin offers a Heat Deflection Temperature of 160°C, solid mechanical strength, and the micro-scale resolution that BMF printers are known for. It is available in both yellow translucent and black, and can be utilised at 2, 10 & 25 micron BMF technology at IPFL.
For any application where a component must meet fire safety standards without sacrificing dimensional accuracy or fine feature detail, FR Resin is the material to reach for.
FR Resin is most valuable where flammability certification, thermal stability, and micro-scale precision are all needed in the same part. Common applications include:
Electronics Enclosures and Connectors
Micro-scale housings, connector bodies, and PCB-mounted enclosures for consumer and industrial electronics where UL94 V-0 certification is a compliance requirement. FR Resin can be printed at the fine feature sizes needed for modern electronics without compromising the fire safety rating of the assembly.
EV and Automotive Components
Battery management system components, sensor housings, and small structural parts for electric vehicles and conventional automotive applications where fire resistance is a regulatory and safety requirement. The HDT of 160°C also means parts can handle the thermal environment of automotive engine bays and battery packs without deforming.
Aerospace Sub-Assemblies
Lightweight, flame retardant micro-parts for aerospace interiors and sub-assemblies where both dimensional accuracy and fire safety standards must be met. The combination of UL94 V-0 rating and micro-scale printability makes FR Resin a practical option for parts that would otherwise require expensive conventional manufacturing.
Defence and Security Equipment
Components for defence applications where fire resistance is a specification requirement alongside precise geometry and robust mechanical performance. FR Resin’s stiffness and hardness make it suitable for structural micro-parts in demanding environments.
Industrial Control and Sensor Housings
Housings and brackets for industrial sensors, control modules, and instrumentation in environments where fire risk must be managed. FR Resin allows complex, tight-tolerance geometries to be produced in a material that meets the flammability requirements of industrial safety standards.
Telecommunications Infrastructure
Micro-scale components for telecoms hardware, antenna assemblies, and network equipment where UL94 V-0 certification is required by device standards. The material’s dielectric properties also make it a candidate for RF-adjacent components where electrical performance matters alongside fire safety.
IPFL are the only UK provider utilising 25, 10 and 2 micron BMF technology, with hands-on experience across the full BMF material range including FR Resin. We understand both the printing process and the compliance context, so we can help you get parts that are not just dimensionally accurate but appropriate for the certification environment they need to operate in.
If you are working to a UL94 V-0 requirement and need micro-scale geometry alongside it, or if you are still working out whether FR Resin is the right call for your application, the team is happy to work through that with you.
