About Us
Built on Experience. Driven by Precision.
Since 1985, Cosar Mold has been delivering high-quality mold solutions with a focus on performance, reliability, and long-term partnerships.
Who We Are
Cosar Mold is a full-service mold manufacturing and repair company based in Kent, Ohio. We specialize in precision mold solutions for the plastic, rubber, blow mold, and die cast industries.
Our team combines decades of hands-on experience with modern technology to deliver tooling that performs reliably in demanding production environments.
Our Story
Cosar Mold was founded in 1985 by Steve and Al Rastetter, starting in a basement and garage with a clear goal—to provide the plastic industry with high-quality mold finishing services.
As demand grew, so did the company. Within just a few years, Cosar expanded into a larger facility in Kent, Ohio, and built a reputation for quality and reliability.
In 1995, the company established its current location in the Commerce Industrial Park, continuing to invest in equipment, people, and process improvements. In 2001, Jerry Johnson joined as a partner, helping further strengthen the company’s leadership and growth.
Today, Cosar Mold continues to evolve while staying true to the values it was built on—precision work, strong relationships, and dependable results.
What Sets Us Apart
- Fast turnaround without sacrificing quality
- Ability to handle molds up to 50,000 lbs
- Deep expertise across multiple industries
- Focus on minimizing downtime and production loss
- Long-standing client relationships built on trust
Built for Performance
We understand that when a mold goes down, production stops—and every hour matters. That’s why our process is built around speed, precision, and reliability.
Our team works quickly to diagnose, repair, and restore tooling so it performs exactly as intended. Beyond repairs, we also offer engineering revisions and preventive maintenance to extend the life of your molds and reduce future downtime.
At Cosar Mold, quick turnaround only matters if the job is done right—and that’s where we stand apart.
Our Commitment
We are committed to delivering consistent quality in every project while maintaining a safe, efficient workplace for our team. Through continuous improvement and responsible growth, we aim to provide long-term value to both our customers and employees.