Since 1939, family-owned Diversified Mold & Castings has built tooling and castings for the plastics and foundry industries, with a particular depth in rotational molds and thermoform tooling. The Warrensville Heights company employs more than 45 people, including many with over 20 years in the industry, and is also the oldest producer of aluminum match plates in the United States. Its capabilities span work from prototypes and mold repairs to large CNC-machined tooling, supported by a history that began as Plaster Process and evolved into today’s Diversified Mold & Castings through three generations of the Costello family.
Rotocast Technologies, IncFounded in 1956, Rotocast Technologies manufactures rotational molds and specialty aluminum castings, drawing on a long-standing focus on tooling for the rotational molding market. The company describes an in-house foundry and a workforce averaging 16 years of experience in specialty casting and mold manufacturing, and it also serves customers in urethane and vacuum forming.AKRON, OH
Norstar Aluminum Molds, IncFor more than 60 years, Norstar Aluminum Molds has made tooling for the rotational molding industry, pioneering aluminum mold-making technology along the way. From two manufacturing locations totaling more than 100,000 square feet, the company combines experienced shop-floor craftsmanship with casting and CNC capabilities to develop efficient, application-specific molds. Since the early 1990s, Norstar has emphasized creative tooling solutions intended to improve mold operation and production efficiency.MIDDLEFIELD, OH
Alpha Tool & MoldSince 1978, Cleveland-based Alpha Tool & Mold has built precision plastic molds, die-cast dies, and related tooling for demanding industrial work. The company also runs its own molding area for sampling and production, supporting customers from prototype and design through mold repair and revision. With more than 30 years as a fixture of Northeast Ohio, Alpha operates with 20 employees in a two-shift, 10,500-square-foot facility and holds AS9100D and ISO 9001 certification.CLEVELAND, OH
Maumee Pattern CompanyFounded in 1915 and acquired by the Neuman family in 1968, Toledo’s Maumee Pattern Company designs and manufactures foundry tooling for complex castings. The company combines more than a century of patternmaking experience with modern CAD/CAM design, CNC machining, and reverse-engineering capabilities, and supports customers with nationwide tooling service. Maumee Pattern is ITAR certified and aligns its cybersecurity program with CMMC Level 2 requirements for defense-related and other sensitive work.TOLEDO, OH