Welcome to Sigma Machine

Established in 1955, Sigma Machine has been steadily growing since its founding. We are committed to delivering high-quality engineering support, prototyping, and manufacturing services. Our team is guided by a can-do attitude and strong Midwestern work ethic. Innovative thinking and production capabilities are at the core of our success and drive us to greater heights as we focus on the electric vehicle industry. As a Tier 1 Automotive supplier, we take pride in our ability to provide quick turn prototypes and production runs without sacrificing integrity, service and – above all else – quality.

Our Quality Policy:
Sigma Machine, LLC is committed to meet and exceed customer expectation by utilizing our advanced prototyping and manufacturing capabilities, driven by process controls and continual improvement systems.