Core-Tech, Inc. manufactures precision ceramic cores for investment casting, including cores for complex internal features in cast parts. The company operates four manufacturing facilities in suburban Cleveland, Ohio, and describes its work as focused on dependable, high-performance cores and inspection quality.
ISO 9001:2015
John Krizay IncFounded in Cleveland in 1969 and now based in Salem, Ohio, John Krizay Inc. fabricates precision quartz and alumina products, including the cores used in aerospace and industrial gas-turbine applications. The company has spent more than five decades refining custom tubing, rod, and core fabrication for customers in more than 20 countries. Its quality system is certified to ISO 9001:2015.SALEM, OH
Spence Technologies, IncSince 1996, Spence Technologies has produced precision CNC-machined parts for companies in Northeast Ohio and across the United States. Working from a 10,000-square-foot shop near Cleveland, the company handles both custom parts and full production runs, supported by more than 100 years of combined machining experience and a climate-controlled quality department. Its capabilities also include laser etching and complete parts-to-print work through an established vendor base.WILLOUGHBY, OH
Cuyahoga Precision ManufacturingCuyahoga Precision Manufacturing in Cleveland makes precision-machined parts, with sample production and bone screws among the work highlighted by the company. Its operation emphasizes experienced machining, modern equipment, high-quality output, and on-time delivery.STRONGSVILLE, OH
J-Lenco, IncBuilt from a dirt-floor garage in Marion, Ohio, J-Lenco has produced sand cores for ferrous and non-ferrous foundries since 1968. The family-owned and operated company now makes cold-box cores for prototype through high-volume work, including a former run of roughly 20,000 rotor cores per day for Kelsey-Hayes. J-Lenco also produces ASTM-standard test cores and maintains traceable quality controls on each mix.LARUE, OH