additive-manufacturing
(18)
GE Aerospace
GE Aerospace sells some of the most complicated machines humans make. The deeper business begins after delivery, when decades of maintenance, data and parts turn an engine under the wing into a long-lived service relationship.
6K
6K is a North Andover, Massachusetts advanced materials company that uses its proprietary UniMelt microwave plasma technology - which reaches roughly 6,000 degrees, hence the name - to produce battery cathode materials and additive-manufacturing metal powders faster, cleaner, and with fewer processing steps than conventional methods. Spun out of research at MIT and the University of Connecticut, the company operates through two divisions, 6K Energy (battery cathode active materials) and 6K Additive (sustainably sourced metal powders), and is building a domestic U.S. supply chain for critical materials backed by federal grants and more than $348 million in venture funding.
Shapeways
Shapeways is an Eindhoven-based 3D printing and digital manufacturing company that lets individuals and businesses upload 3D files and receive custom parts made through additive manufacturing, CNC machining and injection molding. Founded in 2007 inside Royal Philips, it pioneered a public 3D printing service and marketplace, went public via SPAC in 2021, filed for bankruptcy in 2024, and was relaunched in December 2024 by its original founders and the profitable Eindhoven factory team with a renewed focus on B2B customers, sustainability and operational stability.
Simplifyber
Simplifyber is a North Carolina biomaterials company reinventing how soft goods are made. Its proprietary natural-fiber liquid, Fybron, is injected into 3D molds to form fabric directly, skipping the spinning, weaving, cutting, and sewing steps of conventional textile production. Founded in 2021 by fashion veteran Maria Intscher-Owrang and Phil Cohen, the company targets fashion, footwear, bags, automotive and aviation interiors, and consumer packaging with a cellulose-based, largely biodegradable alternative to fossil-derived materials. It closed a $12M Series A led by Suzano Ventures in April 2025.
unspun
unspun is a San Francisco-based fashion-technology company that built Vega, the world's first 3D weaving system for apparel. Vega weaves garments directly from yarn in minutes, skipping cut-and-sew steps to enable on-demand, near-zero-waste, locally produced clothing. A certified B Corp founded in 2015, unspun sells custom-fit jeans direct to consumers while licensing its hardware and software to brands and retailers aiming to decarbonize their supply chains. Its stated mission is to reduce global human carbon emissions by 1%.
PIX Moving
PIX Moving is a city-robotics company that builds modular, drive-by-wire electric 'skateboard' chassis and autonomous 'mobile spaces' such as its RoboBus and RoboShop. Founded in 2014 and rooted in both Silicon Valley and China, PIX combines metal 3D printing, generative design, and self-driving software to turn vehicles into reconfigurable rooms on wheels - a shuttle that can become a cafe, gym, retail pop-up, or library. It sells its chassis and full vehicles to developers, cities, and mobility operators, and runs a Robot-as-a-Service model aimed at deploying fleets across dozens of countries.
MacLean-Fogg
MacLean-Fogg is a fourth-generation, family-owned American manufacturer founded in 1925 that grew from a single railroad lock nut into a global maker of fasteners, engineered components, plastics, and additive-manufacturing tooling. Headquartered in Mundelein, Illinois, the roughly $1.2 billion-a-year enterprise supplies the automotive, heavy-truck, electric utility, telecom, and industrial markets from dozens of plants across North America, Europe, and Asia. In 2025 it marked its 100th anniversary still owned and led by the MacLean family.
Z-Polymers
Z-Polymers is a Lowell, Massachusetts materials science company that emerged from the UMass Lowell Innovation Hub to build Tullomer, a PFAS-free liquid crystal super-polymer spun into ultra-fine fibers and 3D-printing filament. Founded in 2021 by materials scientist Dr. Michael Zimmerman, the company claims strength up to four times that of PEEK - and up to six times stronger than steel at a sixth of the weight - while printing on desktop machines without annealing. Its materials target aerospace, defense, medical devices, energy, and functional fabrics, and in 2026 it secured a strategic seed investment and joint development agreement with Japan's Kureha Corporation.
LuxCreo
LuxCreo is a digital manufacturing company turning dental clinics and labs into same-day production floors. Its patented LEAP (Light Enabled Additive Production) printers, ActiveMemory polymers, and LuxFlow software combine to deliver FDA-cleared, directly 3D-printed clear aligners, night guards, dentures and crowns - cutting weeks of traditional workflow down to hours.
Boston Micro Fabrication (BMF)
Boston Micro Fabrication (BMF) builds 3D printers that work at a scale most machines can't reach - resolutions down to 2 microns with tolerances of about plus or minus 10 microns. Its microArch printers use a proprietary process called Projection Micro Stereolithography (PuSL) to make tiny, complex parts for medical devices, microfluidics, optics, connectors and semiconductor packaging. Founded in 2016 and headquartered in Maynard, Massachusetts, BMF has placed machines with more than 2,000 customers across roughly 35 countries.
Divergent
Divergent Technologies is a Torrance, California digital-manufacturing company behind DAPS, the Divergent Adaptive Production System - an end-to-end platform that pairs AI-driven generative design, metal 3D printing, and software-defined robotic assembly to produce complex automotive, aerospace, and defense structures without part-specific tooling. The same system that builds the record-setting Czinger 21C hypercar now turns out missile airframes and drone aerostructures for U.S. defense primes.
Gamma Alloys Inc
Gamma Alloys is a Santa Clarita, California advanced-materials company that reinforces aluminum with homogeneously distributed nano-ceramic particles to create metal matrix composites that are stiffer, stronger, more wear-resistant and stable across a wider temperature range than conventional aluminum. Its materials ship as wrought stock (bar, tube, plate), additive powders and additive wire for metal 3D printing, and are aimed at aerospace, defense, automotive, motorsports and even luxury goods. Founded in 2008 and led by CEO Mark Sommer, the company drew an investment from Boeing HorizonX Ventures in 2017 and partners with precision manufacturer Del West USA.
Impossible Objects, Inc.
Impossible Objects is a Northbrook, Illinois manufacturer of industrial 3D printers built around its proprietary CBAM (Composite-Based Additive Manufacturing) process. Instead of melting plastic filament, CBAM stacks long-fiber sheets of carbon fiber or fiberglass, inkjet-prints each layer with a fluid, bonds them with high-performance polymer powders like PEEK and nylon, then compresses and heats the stack into a solid composite part. The result is parts the company says are stronger, more dimensionally accurate, and printed up to 15x faster than competing methods - aimed at aerospace, defense, automotive, and electronics customers that need composite parts at production volume.
Relativity Space
Relativity Space is an American aerospace company building rockets in a radically different way - by 3D printing the bulk of each vehicle with its proprietary Stargate metal printers and autonomous robotics. Founded in 2015, it became the first company to launch a largely 3D-printed rocket (Terran 1) in 2023, and is now focused on Terran R, a medium-to-heavy-lift, fully reusable launch vehicle aimed at the commercial and government markets. Under CEO Eric Schmidt, who took the helm in 2025, the company is also exploring orbital infrastructure for AI and high-performance computing.
Azul 3D, Inc.
Azul 3D is a Skokie, Illinois deep-tech manufacturer that builds large-format, high-speed industrial 3D printers powered by its proprietary High Area Rapid Printing (HARP) technology. Spun out of Northwestern University in 2016, the company uses a flowing layer of non-stick fluorinated oil to carry away heat during continuous stereolithographic printing, which lets its machines produce human-sized polymer parts in hours rather than days. Its flagship LAKE printer targets manufacturers who want to make finished goods at scale instead of one-off prototypes.
Backflip AI
Backflip AI is a San Francisco-based generative AI company building 3D design tools for the physical world. Founded by the Markforged co-founders Greg Mark and David Benhaim, it turns text prompts, sketches and photos into editable 3D meshes (Idea to Mesh) and converts 3D scan data into fully parametric CAD models in one click (Scan-to-CAD / Mesh-to-CAD), with native Onshape and SOLIDWORKS integration. The company raised a $30M Series A co-led by NEA and Andreessen Horowitz and trained its model on a synthetic dataset of over 100 million 3D geometries.
Dimension Bio
Dimension Bio (formerly Dimension Inx) is a Chicago-based regenerative therapeutics company that turns living cells into implantable, tissue-like therapies. Its BioNidum platform fuses materials science, 3D printing, and digital manufacturing to build three-dimensional microenvironments that help transplanted cells survive, vascularize, and function in the body. A Northwestern University spinout, the company already brought the first FDA-cleared 3D-printed regenerative bone graft (CMFlex) to patients and is now aiming its lead program at acute liver failure - building an engineered, mini-liver-like therapy to stabilize patients and give their own organs a chance to recover.
OPT Industries
OPT Industries is an MIT-spun materials foundry in Medford, Massachusetts that built the world's first roll-to-roll 3D printing platform, RAMP. By pairing computational design software with continuous additive manufacturing, OPT prints micron-precise materials at unlimited length and high volume - producing everything from the InstaSwab COVID-19 nasal swab to flockless cosmetic applicators and false eyelashes. The pitch is simple: one process, endless possibilities.