This article tells the story of upfitting Sheaumann’s new 18,000 ft cleanroom to grow, process, and package semiconductor lasers and other photonic components. Sheaumann remains one of the few vertically integrated semiconductor laser diode manufacturers in the country in an industry that has largely moved its production to Asia. For Sheaumann, growing its business is about being sized with innovation in mind. Equipping its facility with a team of engineers, skilled technicians, and capabilities to attract the kind of projects that often require more than standard parts. It is about building partnerships for the complex stuff. Working closely with medical device start-ups, government think tanks, and companies forging new frontiers in space. It is about designing custom component solutions for the next big things, and then scaling up with its partnering companies once a project gains traction. Every step of the way. In order to do that, Sheaumann has positioned its cleanroom, foundry, and engineering capabilities at the heart of its next chapter.