Pat O’Day 1948 – 2018

Pat O’Day had a vision. In 1977 that vision took form and became Terra Diamond Industrial. For over 40 years Pat and his wife Judy, with the team at Terra Diamond, have provided truly remarkable products to all of North America. Pat’s passion, and ingenuity in building diamond tools created a world-class manufacturer.

Pat genuinely cared about his employees on and off the clock.  He empowered us to contribute and improve the process. He demonstrated leadership and a dogged insistence on getting the product to our customers the way they need it, on time, never compromise our level of service, and to make a product we can all be proud of.

He is greatly missed. He had our backs when we needed it. His gift to his employees was imparting knowledge to perform and excel at their jobs.

We as the Terra Diamond team continue to carry forward his legacy of vision, passion, and ingenuity.

Terra Diamond Manufacturing – Proudly making world-class tools in the USA!

All Terra Diamond products can be custom built to meet the specific requirements of each individual job. Because of our flexibility in production, we can offer the right tool with cutting-edge technology! Service is built into everything we manufacture at Terra.

Terra Diamond’s segment building process. We adjust the segment hardness and diamond specifications to meet your needs.

Terra Diamond’s advanced laser welding process enables us to produce the best products at a lower overall cost, ensuring your satisfaction and doing it within your budget.

Terra Diamond’s brazing process enables us to custom build and retip your tools so you have the right tool for the job.

Call for product info – 800-523-6806

Why choose us


Great Service

When you need us we’ll be there! Terra’s team will go above and beyond to meet your needs.


Highest Quality

Terra uses only the best materials with team certified quality checked production of all Terra products.


made in the u.s.a.

All Terra’s products are manufactured with pride in Terra’s plant in Salt Lake City, UT.


Made To Order

Terra’s flexibility in production ensures our ability to build custom products to meet the demanding and specific requirements of each job.