Service Provider Spotlight: i3DMFG
July 17, 2025 | Reading time: 4 min
As an original equipment manufacturer, EOS works with a wide range of customers across industries, each bringing different goals to their use of industrial 3D printing. Among these are service providers—contract manufacturers who use EOS technology to produce parts and products on behalf of other companies. These providers operate globally and serve thousands of customers annually, playing a vital role in the broader manufacturing ecosystem.
In this ongoing series, we’re highlighting EOS service providers to share the innovations they’re enabling with industrial 3D printing. Next up: i3DMFG founded in 2013 in Redmond, Oregon, was the one of the earliest companies to specialize exclusively in metal additive manufacturing, The team, founded by President Erin Mastroni, started with a clear focus: to be a production-first operation using metal AM to manufacture end-use parts. More than a decade later, they’ve stayed true to that vision—operating more than two dozen EOS machines and supporting customers in aerospace, defense, medical, and beyond.
Unlike many manufacturing businesses that add AM as a new capability alongside machining, i3DMFG started with AM at its core.
That production mindset helped i3DMFG gain early traction. One of its first major customers was Blue Origin, which helped put the company on the map. From there, business grew steadily alongside the AM industry. The team’s deep technical knowledge and ability to move quickly made them an ideal partner for companies looking to bring complex, lightweight parts to the market.
i3DMFG’s metal capabilities run deep. The company stocks more than a dozen different metal powders and operates exclusively on EOS machines, including open-parameter licenses on each system. That setup gives the team flexibility to dial in process parameters and work closely with customers on development projects.
“We intentionally didn’t put CNC capabilities in-house until the demand for it was undeniable. We wanted to stay focused on being experts in metal additive and we’ve been production-oriented throughout; we were never interested in being purely a prototype shop.”
Erin Mastroni, CEO i3DMFG
Still, i3DMFG is built for production—and many parts that come through the shop are high-value, high-performance components that require precision post-processing. The company now has a CNC lathe, wire EDM, and robotic handling to support hybrid manufacturing workflows.
i3DMFG’s sweet spot is complexity—especially in high-value materials where traditional manufacturing can be wasteful or restrictive. Additive makes it possible to reduce part counts, add internal channels or lattices, and create lightweight components that wouldn’t be possible with casting or machining.
Over the years, i3DMFG has added EOS M 290, EOS M 400-4 and EOS M 300-4 machines to meet increasing customer demand. At RAPID + TCT 2024, the company signed a letter of intent to purchase twelve more M 400-4 systems, bringing their EOS fleet to 36 metal AM systems. It’s a major step toward meeting demand for serial production and scaling large-format metal AM.
“We’re not trying to replace precision machining. But we know how to make additive work in concert with subtractive. In fact, many of our most successful projects involve hybrid workflows.”
Erin Mastroni, CEO i3DMFG
The team’s experience has also made i3DMFG a valuable partner for customers who are new to additive. They’ve built a culture of learning, documentation, and continuous improvement that helps reduce risk and speed up development timelines.
Today, i3DMFG continues to expand within the BTX Precision family of companies, while maintaining its roots as a nimble, independent-minded additive manufacturer. Their location in the Pacific Northwest has helped create high-quality manufacturing jobs in Central Oregon—and position the company as one of the most advanced metal AM providers on the West Coast.
“You’re going to fail—it’s not plug-and-play. The key is documenting what you learn and building from it. We’re here to help our customers disrupt their industries. That’s what additive enables—and that’s why we’re still all in.”
Erin Mastroni, CEO i3DMFG
Learn more about i3DMFG and find more EOS contract manufacturers here:
- EOS Contract Manufacturing Network: EOS Manufacturing Partners for 3D Printing
- i3DMFG: i3DMFG.com
- LinkedIn: i3DMFG on LinkedIn
Get Inspired
Support Free Smart Fusion
Blog
The cutting-edge innovation opens up a world of new possibilities for additive manufacturing with 7 beam profiles enabling you to achieve up to 2x faster productivity.
Beam Shaping Technology
INNOVATION
The cutting-edge innovation opens up a world of new possibilities for additive manufacturing with 7 beam profiles enabling you to achieve up to 2x faster productivity.
