Designed to Outperform | Your custom machine partner for an automated future. At Steven Douglas Corp. (SDC) located in northeast Ohio, we design and build custom, automated machines and support manufacturing processes worldwide. Since 1998, our team drives each project from concept and design through installation, service and maintenance. We have built long-lasting partnerships with our clients and suppliers and continue to develop innovative solutions. Our problem-solving methods combine creative engineering and proven technology to build custom machines. We specialize in assembly & processing, testing & inspection and material handling automated machines across a broad spectrum of industries.