Think You Know the Most Conductive 3D Printing Filament?
Meet Cu29 V2.
Approximately 8.16 million S/m conductivity. More than 80× the conductivity of leading polymer-based conductive filaments.
All-metal. Power-grade. High-current. High-voltage. No required post-processing.
Print functional electronics using standard FDM/FFF platforms, from <$400 desktop printers to $250k+ industrial systems.
Order Cu29 V2
2026 TCT Materials Award Winner at RAPID+TCT 2026
See Cu29 in Action.
Our Customers
Cu29: Building the Future of Embedded Electronics
Kupros Printed Electronics & Application Development
Turn Cu29 Into a Testable Application.
Kupros works with engineers, researchers, and advanced manufacturing teams to develop and manufacture Cu29 test articles, application-specific prototypes, and new Additive Manufactured Electronics workflows using standard FDM/FFF platforms.
Our current development work includes embedded conductive pathways, sensor and strain-gauge structures, antenna and RF test structures, conductive coils, solderable interfaces, grounding and shielding concepts, and high-current and high-voltage conductors.
Whether you are evaluating Cu29 for the first time or developing a new electronic application, we can help move the concept from an idea into something that can be printed, tested, measured, and improved.
Prototype & Test Article Printing – Cu29 coupons, conductive structures, and application-specific R&D parts.
Application Development – Develop new approaches for sensors, RF structures, conductive pathways, coils, shielding, and other electronic functions.
Desktop-to-Industrial FDM/FFF – Develop and test workflows using accessible desktop systems through industrial additive manufacturing platforms.
Technical Characterization – Support electrical testing, process development, and iterative application improvement.
Have an application in mind? Let’s build and test it.
Cu29 Technical Consulting & Application Support
Move Faster From Material Evaluation to a Repeatable Workflow.
Cu29 is not a conventional polymer-based conductive filament, and developing power-capable Additive Manufactured Electronics requires more than simply loading material into a printer.
Kupros works directly with engineering teams to evaluate Cu29, establish starting process parameters, develop test coupons, troubleshoot printing, characterize electrical performance, and determine how the material can fit into a specific application or manufacturing workflow.
Support can include:
Printer & Process Review – Evaluate FDM/FFF platform compatibility, hardware configuration, and starting print parameters.
Application Planning – Define the electronic function, material requirements, geometry, test approach, and development path.
Electrical Characterization – Support evaluation of resistance, voltage, current, continuity, and application-specific electrical performance.
Design & Process Development – Iterate on conductive features and manufacturing parameters as the application progresses.
Aerospace, Defense & Advanced Manufacturing – Support R&D teams evaluating Cu29 for demanding technical environments and emerging electronics applications.
Bring us the problem you are trying to solve. We will help determine whether Cu29 is the right material platform to solve it.
Kupros Novel Materials Development
When the Material You Need Does Not Exist Yet, Build It.
Cu29 is the result of years of materials development focused on combining metal-level electrical performance with the accessibility of FDM/FFF additive manufacturing.
Kupros applies that same materials-development approach to new customer and partner requirements.
We work with organizations developing advanced applications that require specialized electrical, thermal, mechanical, environmental, or manufacturing properties beyond commercially available feedstocks.
Capabilities include:
Custom Material Formulation – Develop material systems around defined conductivity, processing, mechanical, thermal, or environmental requirements.
Experimental Batch Development – Produce material for controlled R&D, testing, and application evaluation.
Process Development – Establish manufacturing and FDM/FFF processing approaches for new formulations.
Scale-Up Support – Transition promising formulations from laboratory development toward repeatable larger-batch manufacturing.
Defense, Aerospace, Space & Industrial R&D – Develop materials around demanding next-generation manufacturing requirements.
From a new conductive formulation to an entirely new additive manufacturing material platform, Kupros can help turn a difficult materials requirement into a development program.
Kupros' Vision: Redefining Electronics with 3D Printing
At Kupros, we believe the future of additive manufacturing goes beyond printing mechanical parts.
Cu29 is an all-metal, conductive filament developed to bring power-capable Additive Manufactured Electronics to standard FDM/FFF platforms. It gives engineers a new way to develop conductive pathways, sensors, antenna and RF structures, coils, shielding, grounding, interconnects, and other electronic functionality using the same class of printers already found in labs, factories, universities, makerspaces, and defense organizations.
Our goal is bigger than creating a more conductive filament. We are building the materials and manufacturing processes needed to make electronics part of the additive manufacturing workflow itself.
The Future of Additive Manufactured Electronics Starts Here
✅ All-Metal, Power-Grade Conductivity
Cu29 delivers a published resistivity of 1.226 × 10⁻⁵ Ω·cm, providing electrical performance orders of magnitude beyond conventional polymer-based conductive filaments.
✅ High-Current Performance
In recent internal supercapacitor discharge testing, current through a 1.75 mm Cu29 filament sample exceeded the 300-amp measurement limit of the test equipment without destroying the filament.
✅ High-Voltage Capability
Cu29 has been tested at up to 12.5 kV, expanding conductive FDM/FFF beyond traditional low-power printed-electronics applications.
✅ No Required Post-Processing
No sintering. No plating. No curing. No chemical processing. Cu29 is electrically conductive directly after printing.
✅ Desktop-to-Industrial FDM/FFF
Cu29 has been developed and tested across desktop, research, and industrial FDM/FFF platforms, from printers costing less than $400 to systems costing more than $250,000.
✅ Use the Printer Infrastructure You Already Own
Cu29 enables organizations to explore Additive Manufactured Electronics without requiring a dedicated million-dollar electronics-printing platform.
✅ Built for Embedded Electronics R&D
Kupros is actively developing Cu29 applications across embedded conductive pathways, sensors and strain gauges, antenna and RF test structures, conductive coils, solderable interfaces, shielding, grounding, and other emerging electronics-manufacturing capabilities.
✅ Cu29 V2 Is Built for Deployment
The new Cu29 V2 formulation incorporates more than a year of printing, manufacturing, testing, application development, and early-customer feedback, with significant improvements in printability, extrusion behavior, process consistency, repeatability, and manufacturing scalability.
The next generation of electronics will not be limited to flat circuit boards or separate wiring and assembly.
Kupros is building the material platform that can help bring electrical functionality directly into the structures being manufactured.
Explore Cu29 V2
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