Ray Machine and Fabrication, formerly known as Exponent Engineering, is a family-owned, 2nd generation Machine Shop; serving the Four-States of (Kansas, Missouri, Oklahoma, and Arkansas.) RMF offers I.D./O.D. turning, single point thread and repair, milling, broaching, key seats and repair, and surface grinding, to name a few services. We are also specializing in complete fabrication, offering all welding processes. One-offs to production runs. Reverse Engineering of OEM. Conceptual Design and Engineering. We offer off-hour and weekend service to facilitate those unforeseen breakdowns! Big or small, we do it all!