Midfield Pattern Corp is an ISO 9001 certified manufacturer of CNC tooling for the foundry industry. Our specialty is fully CNC-machined matchplates and coreboxes for both iron and aluminum foundries throughout the Midwest. We also make rapid prototype tooling, castings and fully machined components for customers looking to perform field-testing prior to building production tooling. Everything we make is fully CNC-machined, including the gating.