SpaceX's Insane Space Station Tube Manufacturing Made NASA's Giant Machine Obsolete!

A new space station from SpaceX is going up, and it's building something crazier than NASA ever expected. A complex tube system doing basically the same job as the plumbing on the ISS, but at a fraction of the cost and small enough to fit inside a spacecraft you could park in a driveway. And here's the part that actually matters. It's not built by a dozen different contractors handing off pieces to each other. One company built the whole thing start to finish. It all began with a handshake three years ago between a Long Beach startup called Vast and SpaceX. Vast wanted to become the first private company to launch a commercial space station into orbit. So they signed a deal on the spot to fly their station, Haven 1, on top of a Falcon 9. The current target? Quarter 1, 2027. For SpaceX, that launch is barely a stretch. This is a company that regularly hauls heavy, complicated payloads for NASA. Haven 1, by comparison, is small. Small enough to fit entirely inside a standard Falcon 9 payload fairing. Compare that to the ISS, which took over 40 launches and more than a decade to assemble in orbit. Haven 1 goes up in one shot. So why so tiny? Because Haven 1 isn't really the trump card. It's the test article. Vast is using it to prove out core technologies in orbit. Technologies that will then get carried over to Haven 2, the company's real ambition. A multi-module successor to the ISS itself. That's why the schedule is so aggressive. Any delay early on ripples through everything that comes after. A domino effect. Once the hardware is up, Vast plans to send astronauts to the station aboard a SpaceX Dragon capsule, proving they can run a crewed commercial habitat safely. So, how close are they? Nearly three years after the first Pathfinder hardware article, Vast has now entered the integration phase. Still tracking for that early 2027 launch. And the secret behind staying on schedule is simple. Build the complex, schedule-critical, high-iteration parts in-house. Anything that depends on an outside vendor's lead time is a risk to the schedule. So, Vast keeps it internal. One of those in-house parts is what's called a fluid system. Essentially, the piping and circulation infrastructure of the station. You can think of it like a building's plumbing. Clean water in, waste water out. Coolant running through the walls to carry heat away from electronics. But in space, you're not just moving water. You're moving air. So, the fluid system picks up a second job. Oxygen delivery and carbon dioxide removal. And it doesn't stop there. This same system also handles propellant. Moving it between tanks, valves, and thrusters to feed the engines. So, one system, five separate flows running through it at the same time. Breathing air, clean water, coolant, propellant, and waste water. None of which can mix. But, compared to keeping five flows separate, the bigger nightmare is blockage. Everyone's dealt with a clogged drain at some point. Annoying, but fixable. You clear the obstruction, or you stop flushing things you shouldn't. On Earth, gravity does most of the work of keeping liquid moving where it should. In space, unfortunately, there's no gravity to rely on. In microgravity, liquid doesn't settle. It clings to surfaces, forms free-floating droplets, or mixes with air into bubbles that jam up a line. That makes transport genuinely difficult. The fix engineers landed on is capillary flow. The same phenomenon that lets a paper towel pull water sideways, and even upward, against gravity. Two forces drive it. Adhesion, where liquid clings to the walls of a tube, and surface tension, where liquid molecules pull on each other like a thin, stretched membrane. On a station, engineers cut specially shaped grooves, slits, and wettable channels into surfaces to guide liquid exactly where it needs to go, gravity or not. But the problem that will give you a headache is its speed. Capillary flow only moves small amounts of liquid at a time through narrow slits, and station demand is nowhere near that small. So it can't do the job alone. That's where active gas-liquid separation comes in. Two devices, doing two different jobs. First, centrifugal phase separators. These spin fast enough to create artificial gravity, flinging liquid outward while gas stays at the center. The same basic principle as a salad spinner, just doing something far more critical. Membrane degassers. These use membranes that let gas molecules pass through while trapping liquid behind, pulling dissolved gas bubbles out of water. Between capillary flow and active separation, the station can move five different fluids without them turning into a floating, bubbling mess. Okay, after you've solved distribution and blockage, the next problem is space, literally. So, how can you compress all of this into a spacecraft roughly ten meters long, alongside every other piece of equipment the station needs? So the key word becomes integration and commonality. Take oxygen and hydrogen. Instead of building two separate systems to generate each gas, we just use one water electrolysis unit that produces both at once. Oxygen goes straight into the cabin to replace what astronauts breathe. Hydrogen gets collected separately and either routed to a saboteur system or vented overboard. None of this is new physics. The ISS has been doing it for years inside its oxygen generation assembly. Standardization saves volume and costs the same way. Use the same design and component types across as many gas lines as possible, while keeping the actual gas sources and critical branches separate. Fewer part types means less to stock, less to manufacture, less to go wrong. But commonality has a limit. Different gases have different properties and serve different purposes. Even trace contamination between them can be disastrous. So good design threads a needle. Share components where you can, but keep sources, supply lines, and critical functions strictly separated. Simply put, the savings per unit volume weren't as high as we expected. That's part of why 3D printing has become such a useful tool here, the same approach SpaceX used to simplify the Raptor 3 engine. Printing lets engineers build parts with complex geometries that no machine shop could cut, but are nonetheless extremely compact. A cold plate is the clearest example. A single printed block with an extremely complex network of coolant flow paths embedded within its structure. These integrated flow paths enable coolant to make maximum contact with the high heat generating area of the avionics. And here's one more tidbit worth mentioning. In-house manufacturing at Vast isn't just about fluid systems. It stretches into food, too. Back in November 2025, the company shared on X that they'd finished their first in-house freeze-dried strawberries. Small detail, but it points to something bigger. The same playbook that's building their fluid systems could end up preserving the food astronauts eat, helping close a real gap in how crews get proper nutrition in space. And honestly, this one's personal. Food and nutrition matter, maybe more than people give them credit for. So here's the question. Want me to dig deeper into this one? A full breakdown of how Vast and other space units are tackling food in space? Let me know. Hit that subscribe button to wait for such interesting videos. Although all of those technologies are incredible, what makes Vast's talented engineer prouds of the most is that all of it is built in-house. The company said as much on X in mid-August. Our space stations and satellites use fluid systems to transport oxygen, water, coolant, and fuel. We manufacture, test, and integrate these systems in-house with the speed, precision, and scale required to build next-generation space infrastructure, starting with Haven 1. They followed that up in early August with another post detailing their wet trash system, built the same way. Compare that to the ISS. That station was built through contributions from dozens of major contractors. Martin Marietta, Boeing, Hamilton Standard, McDonnell Douglas, Teledyne Brown Engineering, all playing pivotal roles in fluid and propulsion systems. That gave NASA a lot of redundancy and expertise, but too many cooks spoil the broth. With so many contractors involved, the same piece of equipment could get built two different ways depending on who made it. For example, the ISS's waste processing system had one version designed the Martin Marietta way and another designed the Boeing way, two different approaches doing the same job, existing side-by-side on the same station. As a result, someone had to constantly check that everyone's parts would actually connect and work together. Otherwise, Boeing's hardware might not fit or talk properly with Martin Marietta's hardware or anyone else's. Add in equipment built as multi-user instruments from a wide range of science labs, and you get a station that's powerful, but genuinely hard to keep uniform. VAST, as a startup, went the other way. In-house manufacturing and vertical integration. Cheaper, yes, but that's not the only benefit. Keeping fluid and power systems under one roof means VAST can test the exact same hardware that will actually fly, start to finish, all in one place. That's faster and cheaper than the ISS approach, where NASA had to coordinate testing across many separate contractors. It also means real system uniformity. Where the ISS has to reconcile parts from a dozen different sources, VAST designs its systems as one unified whole from day one. Oxygen, water, coolant, and fuel all managed together, sharing components to keep bulk down. Vertical integration looks set to become the norm across the industry as private companies chase cost efficiency and speed. And the people driving that shift matter as much as the strategy. VAST's manufacturing engineer, too, for the fluid systems team, Long and Guinn, spent time at both ULA and NASA before landing there. Exactly the kind of institutional experience that makes in-house manufacturing work.