(636) 940-9988

Office / Direct


St. Charles, MO

Our Location

Welcome to Patterson Mold and Tool

Your Full Manufacturing Solutions Provider

Patterson Mold and Tool provides our die cast customers with design, manufacture, and repair of precision die cast tooling. Our quality, engineering, and unmatched support allow us to provide the most value to our customers.

Patterson provides CNC machining, finishing and other secondary operations, and assembly services for low to high volume production. We can help at all stages of production, from prototyping to complete turnkey products.

Patterson’s extensive range of engineering services help turn your ideas into efficient, effective designs. Our engineers remain involved and responsive throughout the entire project to ensure the high levels of support our customers deserve.

From Vision to Reality:

Our 8 step road map to manufacturing success. We can help you at any stage (or all stages) in the manufacturing process.

1. Concept

Our expertise in guiding product development during the concept phase accelerates innovation and ensures a successful launch.

2. Product Design & Optimization

Our experienced engineers can assist with new product designs as well as optimizing existing designs.

3. Prototyping

We'll transform your ideas into tangible prototypes, providing the perfect foundation for refining and perfecting your products.

4. Inspection & Analysis

Our comprehensive product inspection and analysis service ensures impeccable quality control, detecting and resolving potential issues early on to deliver exceptional products that exceed your expectations.

5. Manufacturing

We deliver efficient and high-quality manufacturing solutions for projects of all sizes, from small-scale production to large-scale manufacturing.

heat-haze6. Secondary Operations

We offer an extensive range of secondary operations, including painting, plating, anodizing, powder coating, and laser engraving, providing you with comprehensive solutions that elevate the aesthetics and functionality of your products.

7. Assembly

Streamlining the manufacturing process, our top-notch product assembly service ensures flawless integration of components, meticulous quality control, and timely delivery.  We're here to provide a seamless and efficient production experience for your company.

8. Product Validation

Our product validation service acts as the final seal of excellence in the manufacturing process. We rigorously test and validate every aspect of your product to ensure optimal performance, precision and reliability.

What we do

Our team of experienced manufacturing experts are dedicated to helping you bring your ideas and products to life with the highest level of innovation, precision, and quality. Whether you need a custom mold for a specific product, a tool or process for manufacturing, precision machined components, or product engineering services, we have the expertise and resources to deliver exceptional results. We pride ourselves on our ability to collaborate closely with our clients to understand their unique needs and provide customized solutions that exceed their expectations. Contact us today to learn more about how we can help you with your next project.

Why Patterson Mold & Tool?


We’re happy to answer any questions you may have about our services at Patterson Mold and Tool. Here are a few common questions we’re asked:

We serve a wide range of industries including.

  • Aerospace and Defense
  • Medical
  • Automotive
  • Electric Vehicles
  • Recreational Vehicles
  • Small Engine
  • Telecommunications
  • Appliance
  • Power Tools
  • Lighting

Yes, our product engineering services cover the entire product lifecycle, starting from concept development and design all the way through to prototyping, testing, and manufacturing. Our team will collaborate closely with you to understand your vision, goals, and technical specifications, and then apply their expertise to design and develop viable and manufacturable products. We ensure seamless integration between the design and manufacturing stages, providing a comprehensive solution for your product engineering needs.

We provide Die Cast tools that operate in die cast machines, ranging from 50 to 3000 tons, and fully-assembled tool weights of up to 80,000 pounds. We also provide trim dies and machining fixtures to complement our die cast dies.

Yes, we offer repair, refurbishing, and reverse engineering of tooling regardless of where it was originally manufactured.

Yes, we specialize in reverse engineering tooling. Using advanced technologies like 3D scanning and CAD, we can accurately recreate existing tools or parts to meet your specific requirements or produce replacements for you.

Our CNC machining services can produce a diverse range in size and type of products and components. From intricate prototypes to large-scale production runs, we have the capability to manufacture precision parts for industries such as automotive, aerospace, electronics, medical devices, and more. Whether it’s complex geometries, tight tolerances, or specific finishes, our CNC machines and experienced machinists can deliver the required specifications for your project. 

Yes to both. We can assist you with all of your post production needs including assembly, anodizing, painting, powder coating and laser engraving. 


Since 1978

Established in 1978, Patterson Mold & Tool, LLC is located in St. Charles Missouri. We are AS9100, ISO 9001, and ITAR registered. Our multiple facilities operate three shifts to provide capacity to serve a wide range of industries. Our customers appreciate their projects being delivered with high quality, on time, and backed by exceptional service.

Reach out to the team at Patterson Mold and Tool and we’ll help guide your tool & die project, precision component manufacturing, or product engineering service to a predictable, successful outcome, as we’ve been doing for the past 45 years.

Contact our Patterson Mold and Tool today to learn how we can help you bring your ideas to life with precision, quality, and customization.