Our Team

A Team of Industry Leaders for Over 60 Years.

Diane Peterson Edwards President and CEO

Diane Peterson Edwards is the President and CEO of Peterson Tool Company (PTC), a family-owned company that she first joined while in high-school, providing front office and shipping support. Ed- wards later served as Human Resources and Benefits Coordinator, utilizing her skills of building and maintaining important relationships in business in order to enhance Peterson Tool’s record of excellence in customer service. Since being appointed CEO in 2012, Edwards has spearheaded many corporate initiatives including implementation of new software along with new measurement a... read more

Nancy Peterson Hearn Chairman

A nationally recognized business entrepreneur, Nancy Peterson Hearn is chairman of Peterson Tool Company, Inc. Under her leadership, the company has made exponential gains in sales, production and reputation, and is ranked among the world's premier designers and manufacturers of custom insert tooling. Peterson Tool received ISO 9001:2015 certification, and has earned numerous quality and certification awards including General' Motors Targets for Excellence Award and Caterpillar's coveted Certified Supplier of Quality Materials awards.... read more

Sales Team

Regional sales support allows us to build relationships with our customers. This allows us to better understand your needs and gives you an outlet if you have questions or need assistance with new products. With representation across the globe, Peterson Tool Company is an international company. Currently working in Canada, Mexico, South America, Europe, and Asia. We have dedicated ourselves to growing across the world. Contact us today.... read more

Design / Engineering Innovation and In-Field Experience

Our design and engineering department creates custom tools for each individual customer’s demand. Using OEM machine standards to set base dimensions our tools are right every time. With our Thrift® packages, changeover and setup times are incredibly reduced, allowing your company to save money while also benefiting from superior tool quality.... read more


We have both an Electrical Discharge Manufacturing department and an Electrical Discharge Grinding department that both specialize in removal of material using electrical discharge.  The EDM department specializes in manufacturing fixtures to exacting specifications.  At Peterson Tool Company we use a proprietary process in the Electrical Discharge Grinding department that is used to remove raw material leaving the desired form in the insert. This process leaves a minimal “halo” or recast layer and optimizes the removal of the material leaving a virgin like substrate.... read more

Quality Control

Peterson Tool Company is an ISO 9001:2015 certified company. We hold our tools to the highest standard and ensure that your tool is to our print. To hold this level of quality standard our quality manual incorporates gage calibration, process control points, and procedural controls.... read more


This department includes our form steel grinding, secondary clearances, top rake and unloading operations. We also finish dimensions and hold tight tolerances, as close as +/-.00025, while our operators complete 100% in-process inspections.... read more

Round Grind

Our combined 180+ years of experience in tool and cutter grinding gives our customers superior tool quality. These tools can be solid, carbide or HSS, or brazed tip tools.... read more


Our machine shop allows us to create custom tools to our customer’s specifications. This department incorporates CNC Mori Seiki Lathes, HAAS and Bridgeport Milling machines. We can make pocketed insert tools that can be round or flat for reduced cost over solid cutters.... read more


Our shipping department uses a variety of methods to ensure your product arrives safely. We use a laser marking method to clearly identify our tools for legibility.... read more

Office / Accounting / HR / Purchasing

Our office staff covers from the time a customer places a quote until the order is invoiced. We pride ourselves on customer service and our knowledge of each of our customers. From checking on deliveries to answering questions you may have on your order, our staff is top notch.... read more

We Make Custom Tools... for Any Machine... Every Day.