Steven Douglas Corp

When a manufacturer needs a custom machine — one that runs fast, runs reliably, and doesn't leave their team stranded when something goes wrong — they call SDC. Steven Douglas Corp. (SDC) designs, engineers, and builds custom automated machines for manufacturers across North America and globally. We've been doing this since 1998, and we've completed more than 1,400 projects across automotive, life sciences, electronics, aerospace, energy, and consumer products. Our sweet spot is high-speed, small-part assembly — the kind of machine that takes a process your people are doing by hand and turns it into something that runs lights-out. We typically work in the $500K–$2M project range, and we handle everything in-house: concept, design, build, run-off, installation, and ongoing support. What sets us apart isn't just what we build — it's what happens after. We stand behind our machines for as long as they're in production. Our project managers stay involved from kickoff through commissioning. And when something comes up down the road, you're calling the people who built it. We're a family-owned company headquartered in Concord, Ohio. We're not optimizing for an exit, we're scaling and building for the long run — same as the machines we make. What we build: Assembly & processing machines | Testing & inspection systems | Material handling automation | Robotic cells Who we serve: Automotive | Life sciences | Electronics | Aerospace | Energy | Consumer products