Westmag Raises $11M To Build American Drone Motors, Betting Scale Beats China On Price

Westmag emerged from stealth on Tuesday with $11 million in seed funding to manufacture drone motors and robot actuators in South San Francisco, aiming squarely at the one part of the American drone supply chain almost no one has tried to fix. The round was led by Andreessen Horowitz, with Founders Fund, Lux Capital, NFDG, and Menlo Ventures participating. The company name is short for Western Magnetics Company, and its pitch is direct: build the spinning magnets that power drones and humanoid robots here, at volume, instead of importing them from Shenzhen.

The timing is not an accident. When the FCC added every foreign-made drone and UAS critical component to its Covered List in December 2025, motors were on the list. I covered that decision the day it dropped, and the question it left unanswered was the obvious one: if you ban the Chinese motors, who builds the American ones? Westmag is one of the first venture-backed answers.

Co-founders David Hansen (CEO) and Jordan Sanders (COO) closed the funding in 2025 and spent the months since in stealth, building industrial capacity, lining up suppliers, and validating hardware with high-volume customers. The company says it now has a book of committed orders for hundreds of thousands of units and is ramping production at Factory 01, its launch facility and headquarters.

The Component No One Wanted To Onshore

Motors are the muscle of any machine that moves under software control, and America makes almost none of the ones drones and robots need. An aerial drone flies on four or more electric motors. A humanoid robot moves on actuators with embedded motors, more than 20 in the typical case, and motors plus magnets make up roughly half the bill of materials for a humanoid. China has held the vast majority of global production for decades, built on thirty years of accumulated process knowledge rather than any single material advantage.

That process knowledge is the real moat. A brushless DC motor looks simple on paper, copper wire wound around laminated electrical steel with neodymium magnets pressed into the rotor. Making one at scale is a stack of compounding tolerances: laminations aligned to within a hair, wire wound at precise tension, magnets oriented to a fraction of a degree and magnetized in place. Get the orientation slightly wrong and the field goes lumpy, the motor cogs and vibrates and wastes energy. The winding machines in Shenzhen have been refined across millions of units. American factories have not.

This is the gap DroneXL readers have watched widen for two years. When Beijing sanctioned Skydio in October 2024, America’s largest drone manufacturer was rationing batteries within weeks after a single supplier was ordered to cut ties. US drone makers have struggled to break free from Chinese parts ever since, because the dependency runs deeper than assembly. As one Forbes analysis I covered in January put it, you can assemble a drone in Ohio with motors wound in Texas, but if the magnets inside those motors come from Chinese-refined rare earths, the supply chain is still exposed upstream.

Westmag Is Betting On Scale, Not A Better Motor

Westmag’s strategy rejects the usual American instinct to win on engineering. Hansen’s argument is that motors are capped at 100% efficiency, so squeezing a percentage point or two of improvement does not matter if you cannot build the thing at volume and get it adopted. The company is vertically integrating its whole stack, from design through manufacturing and into the supply chain, on a shared architecture that serves both drones and robots. The two products use many of the same materials and processes.

At Factory 01, Westmag runs every motor and actuator through one integrated production platform that handles design and winding through final validation in-house. The company is also pushing upstream into subcomponent work, including electrical steel stamping and rare earth magnet finishing, with suppliers in the US and allied countries such as Japan. That upstream piece matters more than it sounds. No one in America currently finishes small-motor magnets at scale, the cutting and shaping and coating and magnetizing that turns a raw block into a usable part, so a company serious about not shipping magnet blocks to Asia and back has to do that step itself.

The investor framing came from Erin Price-Wright, a general partner at Andreessen Horowitz. “Motors and actuators are the muscle of physical AI, and right now America’s share of that muscle is essentially zero,” she said in the company’s announcement, adding that the founders understand the win condition is not a marginally better motor but the ability to make a lot of them domestically on a platform serving both drones and robots. That is the whole bet: volume and proximity, not novelty.

The Policy Tailwind Is Real, And So Is The Upstream Trap

The regulatory backdrop gives Westmag a customer base that did not exist two years ago. The FCC’s December 22, 2025 action banned all foreign-made drones and critical components from receiving new equipment authorizations, a move that went far beyond the DJI and Autel restrictions the 2025 NDAA actually required. Motors and flight controllers landed on the list, as did batteries and the rest of the critical-component category. The agency has since carved out narrow exemptions, clearing four non-Chinese drone models through a Pentagon review process while DJI and Autel stay blocked. DJI has taken the FCC to the Ninth Circuit, arguing the government never proved it was a threat.

For a domestic motor maker, every one of those restrictions is a sales lead. American OEMs that want FCC-authorized products built on a domestic component base now have a reason to call a company like Westmag instead of defaulting to T-Motor in China.

The trap is upstream, and it is the same one that has tripped every “Buy American” drone claim so far. China controls roughly 90% of the magnets needed for motors and about 90% of global rare earth processing. You can wind a motor in California, but the neodymium in it likely traces back to a Chinese refinery. Westmag’s plan to finish magnets domestically and source from allied countries is the right instinct, but magnet finishing is not magnet mining or refining, and the refining choke point does not disappear because a startup raised a seed round. The FCC even banned foreign drone batteries in the same December action, despite China making 99% of them, which tells you how far the policy ambition runs ahead of the industrial reality.

DroneXL’s Take

I have been writing about the hole in the American drone supply chain since October 2024, when Skydio’s battery crisis showed how fast a single Beijing phone call could ground a flagship US company. Almost every story since, from the Chip War author’s analysis of why tariffs failed against DJI to the WSJ investigation into Chinese motors inside American humanoid robots, has circled the same point. We are good at designing drones and robots. We do not make the parts that make them move. Westmag is the rare company attacking that specific layer with real money behind it, and the drone-plus-robot shared architecture is a smarter wedge than betting on drones alone.

What I keep coming back to is the difference between this round and the policy that created its market. The FCC banned the motors before anyone had built a domestic replacement at volume, which is the pattern across every action in this chain. Ban first, hope the supply catches up. Westmag is the supply side trying to catch up, and $11 million is a seed round, not a factory network. The company itself frames this as a scale game that takes years of building before the cost curve bends.

The honest open question is whether domestic magnet finishing plus allied-country sourcing is enough to count as a secure supply chain while China still refines most of the world’s rare earths. Westmag’s announcement did not resolve that, and the answer matters because it determines whether “American-made motor” means American all the way down or American at the last assembly step. If DJI’s Ninth Circuit appeal narrows the Covered List designation, the regulatory tailwind behind every domestic component startup gets weaker, and Westmag’s unit economics start leaning harder on actually beating China on cost rather than on a policy-protected customer base. That is the number to watch, not the seed round.

Sources: Westmag press release via Business Wire, Not Boring by Packy McCormick, Core Memory.

DroneXL uses automated tools to support research and source retrieval. All reporting and editorial perspectives are by Haye Kesteloo.