Under Pfingsten’s ownership, HUEBCORE was a business-to-business magazine publishing company serving the North American manufacturing and process markets. Titles included Tooling & Production, Metlfax, Designfax, Quality in Manufacturing, and Engineer's Digest. The company also published six supplements and provided ancillary products to advertisers and readers. HUEBCORE was headquartered in Solon, Ohio. Pfingsten sold its interest in January 1997.