Inside the $42M bet on making composite parts easier to buy

Layup Parts, a startup based in Huntington Beach, California, just raised $42 million in its Series A funding round. The lead investor was Founders Fund, and this is the company's second major funding round in just over two years. The company was founded in January 2024 by Zack Eakin, who previously worked as an engineer at Anduril (a defense technology company), along with co-founders Brian Schimpf and Matt Grimm.

Eakin left Anduril specifically to start Layup Parts. He has spent roughly two decades working with composite materials — advanced materials like carbon fiber that are lighter and stronger than metals. The company's pitch is simple: it wants to be the "Amazon for composite parts," taking a fragmented market where suppliers and manufacturers work through phone calls and long-standing relationships, and digitizing it.

Why This Funding Matters

Layup Parts closed a $9 million Series A just five months after it was founded. Now, a second round of $42 million is following soon after. This speed suggests that investors believe there is a real opportunity here, and that the team has the credibility to pull it off. Eakin's two decades in composites, plus his connection to Anduril's leadership, appear to have convinced Founders Fund to back him twice in quick succession.

The broader context here reveals a pattern worth noting: Founders Fund is betting that composites manufacturing — traditionally a slow, relationship-heavy business — can be digitized and scaled up in a way that saves time and money. This mirrors what happened in the 2000s and 2010s with companies like Proto Labs and Xometry, which built online platforms to connect customers with machine shops. If Layup Parts pulls off something similar for composite parts, it could reshape how aerospace companies and defense contractors source materials.

The Challenge: Composites Are Different

Here's where the story gets more complex. Composites manufacturing is not like ordering a part from a standard machine shop. Carbon fiber and other advanced composites require precise layering, specific curing schedules (time and temperature), and strict quality control. Defects might not show up until the part is actually tested or used — sometimes even in the field.

Aerospace and defense customers, which make up the bulk of the composites market, demand detailed certifications, traceability records, and material documentation. Any company that wants to build a marketplace for these parts has to solve two problems at once: making it fast and easy to find suppliers (the marketplace piece), while also guaranteeing that quality and safety standards are met (the complex part).

The Anduril Connection and Defense Opportunity

Eakin's background at Anduril matters here. Anduril, founded by Palmer Luckey, focuses on making defense technology faster and cheaper to produce. The company's leadership gave Eakin the go-ahead to pitch the Layup Parts idea while he was still working there — a sign of support for the venture.

That Anduril connection is significant because the U.S. Department of Defense is actively trying to strengthen domestic manufacturing and reduce reliance on traditional defense contractors for component-level sourcing. Recent initiatives like the CHIPS Act have funneled money into companies that can show they can manufacture key materials domestically and securely. For Layup Parts, this creates a window of opportunity: if the company can solve the composites sourcing problem while also meeting defense procurement requirements — things like domestic manufacturing and supply chain transparency — it could capture a valuable market segment.

What Success Would Look Like

The broader context here is that defense manufacturing and commercial aerospace are both pushing for faster development cycles. SpaceX has shown that rapid iteration with advanced materials is possible. Meanwhile, defense programs face constant pressure to reduce timelines. A working marketplace for composite parts could cut lead times significantly, especially for prototype and smaller production runs.

In my view, what makes this funding round interesting is how it positions Layup Parts to potentially reshape the defense industrial base. If the company can standardize how composite parts are sourced — while still meeting the strict quality, security, and certifications that defense and aerospace customers demand — it could accelerate a broader shift toward software-driven defense manufacturing. That's a bigger opportunity than just becoming another B2B platform; it's about changing how an entire supply chain works.