058. Halcyon Robotics: Building the world's most dextrous hand

There is no King Charles III Space Station this week. There is a flat in Saffron Walden — Saf Francisco, as Calum insists on calling it — with a half-built humanoid torso left behind in California and what its makers reckon is the world’s most dextrous robot hand sitting on the table between the beers. Into the flat come Oli and Ivor of Halcyon Robotics, two Saffron Walden schoolfriends who have known each other since they were fourteen. Oli is the roboticist: cybernetics, a mechatronics degree, a master’s thesis spent trying to rebuild the most dextrous hand on earth, then a stint as a one-man army building the hands at 1X. Ivor is the convert: a chemist who taught himself to code, spent the best part of a decade as what he calls a plumber for software engineers, got absolutely shook by ChatGPT in 2022, and concluded that the only safe ground left to stand on is hardware.

The thesis is simple and the engineering is not. Robotics solved walking — Spot the dog, the old Toyota machines that could just about manage the stairs, the endless parade of humanoids doing backflips — but avoided the thing that would actually make a robot useful, which is the hand. Oli’s framing is that you see a great many robots doing backflips and very few doing anything useful. Put a motor in every finger joint and it overheats. Move the motors back to the palm, as Figure does, and the robot can only lift light packages. Do it properly and you end up running forty-odd tendons over the wrist with near-zero friction for a million cycles, which Oli cheerfully calls a mechanical engineering nightmare and the exact place where everyone, Tesla included, is stuck. Elon Musk reckons half the engineering in Optimus is the hands. Halcyon thinks that is an underestimate. The human hand, by contrast, took billions of years, learned to throw a spear, and used that to take over the planet — and surgeons still tend to fuse the bones in a broken wrist rather than repair them, because the biomechanics are so poorly understood. The proudest achievement of Halcyon’s hand, the one Oli says nobody gets, is turning a dial.

What makes a two-person company plausible is the same thing that made Ivor nervous. AI is eating software, so the convert’s logic is to run at the one thing software cannot yet touch — the physical world — and the irony is that AI is exactly what lets two people attempt it. Between Claude and a 3D printer, Oli and Ivor span CAD, circuit boards, firmware and operating-system-level con