About Us

We are the leading provider of additive manufacturing solutions. From application discovery and launch to production-grade manufacturing capabilities, we can help you deliver new product and supply chain innovations uniquely enabled by the latest additive technologies.


  • Fast Radius is a leading production partner for Carbon’s Digital Light Synthesis (DLS) technology. We have one of the largest fleets of machines currently deployed, including production-grade tools such as the Smart Part Washer and a bulk resin dispensing system.
    We have access to all the Carbon DLS materials, including developmental materials not publicly available.

    Materials include:
    • RPU 70: ABS-like material, performs well under stress, combining strength, stiffness and toughness.
    • FPU 50: Similar to polypropylene, FRU has high impact strength and cycle life. It is designed to withstand repetitive stresses, making it ideal for tough enclosures, hinging mechanisms and friction fits.
    • EPU 40: Similar to urethane rubber, EPU exhibits excellent elastic behavior under cyclic tensile and compressive loads. EPU is useful for demanding applications where high elasticity, impact and tear resistance are needed such as cushioning, gaskets and seals.
    • CE 221: Similar to a 14% glass-filled Nylon 6, CE 221 is a high-performance material with excellent strength, stiffness and thermal stability that makes it a good choice for use at elevated temperatures. It has the highest heat deflection temperature of the Carbon materials at 231º C.
    • EPX 81: Similar to glass-filled PBT, EPX 81 has a heat deflection temperature of 140°C and excellent abrasion resistance, making it useful in a variety of automotive, industrial, and consumer product settings.
    • SIL 30: Similar to TPE, SIL 30 is the first additive material to offer a unique combination of biocompatibility, low durometer and tear-resistance.

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  • As one of the first production partners of HP’s Multi-Jet Fusion (MJF) technology, we deliver quick-turn prototypes all the way up to repeatable, production-grade manufacturing for end-use parts. We are continually driving innovations in post-processing for HP MJF parts, including unique coloring options, chrome plating and premium surface finishes.

    We currently offer HP’s PA 12 material, a versatile thermoplastic for high-density parts. PA 12 has excellent chemical resistance and is ideal for complex assemblies, housings, enclosures and watertight applications.

    We have a robust roadmap of materials for the HP MJF technology. Please contact us to learn more about additional materials currently in development.

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  • Additive Manufactured Thermoplastic and Elastomeric Parts

    Finally, a true alternative to low volume injection molding in terms of quality and cost.
    Fast Radius leverages in-house additive manufacturing equipment and expertise to produce your parts to the same quality standards you would expect from injection
    molding. We are not a service bureau, we are a manufacturing company and we know
    what it takes to make end use parts.

    Advantages of Additive Manufacturing
    • Produces geometries that cannot be machined
    • No tooling investment
    • Injection molded quality without the cost or lead-time of tooling
    • Parts delivered in days
    • Enables rapid product iteration
    • Allows low volume niche products to become viable

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    When you have the right application for metal additive manufacturing the value is incredible. Additive manufacturing is unique in that complexity is free, unlike traditional manufacturing. For instance, you can “drill” a curved hole with additive manufacturing that is impossible to make with subtractive manufacturing.

    The downside of metal additive manufacturing is that it is costly and there is no economy of scale like in traditional manufacturing. The general rule of thumb is that is a part can be machined, it should be machined.

    Presently, the most successful applications for metal additive manufacturing are in the aerospace industry where optimizing the strength to weight ratio with high temperature materials is extremely valuable and has an immediate positive return on investment.

    Advantages of Additive Manufactured Metal Parts
    • Complexity is free
    • Allows for geometries not possible previously
    • Ability to achieve very high strength to weight ratio
    • Works with high temperature materials
    • Faster lead times than machining for complex parts

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  • Fast Radius provides rapid quotes and short lead times on CNC machined parts. We are comfortable with tight tolerances, complex geometries and exotic materials, but of course we will be happy to machine your “easy” parts as well. Our focus is low to medium volume part production for applications where the part has to be right and the promised delivery date has to be met.

    Advantages of CNC Machining
    • Lower cost than additive manufacturing
    • High dimensional accuracy
    • Wide range of materials
    • Very consistent parts
    • Parts can be produced as fast as same day

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  • Similar to injection molding, urethane casting produces hard plastic parts using a two-part mold. When the two halves of the mold are combined, a void is created that the urethane is poured into until it cures. Unlike injection molding however, urethane casting uses soft mold materials, such as silicon rubber, and is more suited to small runs or one-off parts. The mold must still be manufactured by CNC Machining, Additive Manufacturing, or another process. When the mold can be made easily or exists already and the run is small, Urethane casting is ideal.

    • Low cost for small runs
    • Consistent mechanical properties
    • Wide variety of materials
    • Short lead-times
    • Good solution for 25 parts or less

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  • Injection molding is a proven process for producing plastic parts with high accuracy and fine feature detail at medium to high volume. Injection molding requires that a mold (tool) be built specifically for the part to be produced. Molds typically have a 6 to 8 week lead-time depending on size and complextiy. The mold will require a significant capital investment, but each part coming off the mold will be relatively inexpensive. The pro of injection molding is that you can make a lot of parts fast and inexpensively. The con of injection molding is that you are locked into a design and any change to you part geometry can incur significant cost to modify of build a new mold.

    Advantages of Injection Molded Parts
    • High dimensional accuracy
    • Fine feature detail
    • Low part cost
    • Facilitates mass production
    • Wide variety of materials

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  • Fast Radius has the capability to recreate the 3D geometry and engineering specifications along with material testing and verification for your legacy parts. We can also add value to your legacy designs by collaborating with you to make improvements to reduce weight, increase strength and decrease manufacturing costs.

    • Improve legacy parts
    • Reduce manufacturing costs
    • Improve strength
    • Reduce weight
    • Avoid tooling costs

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Our Exclusive UPS Partnership

On Demand Products and Business Models

Additive Manufacturing


Our exclusive partnership with UPS enables us to deliver global supply chain solutions leveraging the most innovative digital manufacturing technologies in combination with the world’s largest network of global distribution hubs. We have a production facility located within the world’s largest packaging facility, UPS WorldPort in Louisville, KY. This strategic “end of runway” location gives us up to 6 hours additional production time versus a “near-site” solution. This enables true just-in-time production for our clients.


Imagine a world of virtual inventory, where parts are produced only when they are needed, where they are needed and in the exact quantities desired. This supply-chain-in-the-cloud is now possible with Fast Radius On Demand Manufacturing integrated with UPS’ global supply chain solutions. Let us share the possibilities with you.

Our Leadership Team

Lou Rassey 2021

Lou Rassey

Co-Founder and Chief Executive Officer

Lou has a 20-plus-year career driving innovation in the manufacturing sector, and is a recognized leader on matters related to manufacturing, industrial innovation and competitiveness. Prior to Fast Radius, Lou was a Partner at McKinsey & Company where he co-led the firm’s global research and advisory efforts on the “Future of Manufacturing.” Lou has helped Fortune 100 executives, start-ups and government leaders in developing and executing strategies to compete in the digital industrial age. He also founded TRG, an industrial-tech-focused advisory and investment firm, and spent the first chapter of his career in engineering and manufacturing in the auto industry. He has an MBA and MS in Mechanical Engineering from MIT where he was a LFM Fellow, a MS from Michigan-Dearborn, and BS from Notre Dame.


Pat McCusker

Co-Founder, Chief Financial Officer, and Chief Operating Officer

Pat leads commercial and financial operations. Prior to Fast Radius, Pat was President, North America at InnerWorkings (NASDAQ: INWK), a technology-enabled marketing services firm. Prior to InnerWorkings, Pat was an Associate Partner with McKinsey & Company, where he served technology clients across a wide range of functions. Before McKinsey, Pat held cross-functional leadership roles at multiple early-stage growth companies. Pat holds an MBA from the University of Chicago and a BA from the University of Notre Dame.


Bill King

Co-Founder and Chief Scientist

Bill is Chief Scientist at Fast Radius. Outside of Fast Radius, Dr. King is Professor and Andersen Chair in the Department of Mechanical Science and Engineering at the University of Illinois Urbana-Champaign. He was the founding Chief Technology Officer at the Digital Manufacturing and Design Innovation Institute, one of the first national manufacturing institutes in the United States. He has authored 225 journal articles and 20 patents. He is a Fellow of the American Society of Mechanical Engineers, The American Association for the Advancement of Science, and the American Physical Society. He holds a Ph.D. from Stanford University.


John Nanry

Co-Founder and Chief Manufacturing Officer

John leads our Product and Application Engineering teams. He brings to Fast Radius deep expertise in designing, building and executing production systems leveraging the latest digital technologies. Prior to Fast Radius, John led the Digital Manufacturing Practice for McKinsey & Company, where he helped clients navigate their digital transformations. John holds his BSE and MSE from the University of Michigan, and his MBA from Northwestern.


Brian Simms

Vice President of Sales

Brian leads the sales organization at Fast Radius. Prior to Fast Radius, Brian was Chief Sales Officer of Rubicon Global where he led sales and marketing through the company’s biggest growth period to date. During this time the company doubled its valuation from $500m to $1B. As Vice President of Regional Sales at Groupon (NASDAQ:GRPN), Simms built and ran a sales team of 400+ sales representatives. This played a critical role in helping Groupon become the fastest company to $1B in annual sales revenue. Prior to Groupon, Simms was Director of SMB Enterprise Sales at Echo Global Logistics (NASDAQ:ECHO) where he helped position the company as a technology-enabled transportation broker. Before Echo, Simms held multiple roles at early and mid-stage technology growth companies.

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James Levin

Chief Marketing Officer

James leads marketing at Fast Radius. James brings to the organization expertise in developing world-class customer marketing programs and strategy for data-driven marketing at scale. Previously James was Vice President of Marketing for SolarWinds (NYSE: SWI) where he led a group of 40+ marketers across 8 offices worldwide, with his tenure spanning the company’s IPO in 2018. James also helped grow Amazon Business (NASDAQ: AMZN) to 400,000 customers and $1BN in annual sales in the business unit’s first 12 months following launch. Prior to Amazon, James held numerous roles spanning marketing, business development, and product management in small and medium-sized high-growth tech companies. He has a MBA from the Kellogg School of Management and a BS in Economics and Communication Studies from Northwestern University.

Heather Baker

Heather Baker

VIce President of People

Heather leads the People practice and is responsible for attracting and developing talent that make new things possible at Fast Radius. She has extensive experience in establishing People functions at disruptive technology companies from start-ups to growth stage. Previously, she was a member of the leadership team and VP of Talent for InContext Solutions, a Virtual Reality solutions company for the CPG and Retail industry. Prior to InContext, Heather held multiple roles in HR, Recruiting, and database marketing at early and growth stage tech companies including partner in an executive recruiting firm.

Our Investors

We are backed by UPS and some of the leading institutional investors in the United States. These investors share a common belief that as additive technologies continue to evolve, companies looking to produce end-use parts will require an entirely new type of supplier. Fast Radius is building this next-generation supplier with the support of loyal clients and this group of world-class investors.

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One-stop Manufacturing

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Fast Radius Virtual Warehouse

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Additive Manufacturing Hosted Capacity

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Additive Exploration Workshop

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Application Launch Sprint

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Application Launch Program® (ALP)

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