Injection Mold Manufacturing Services | Master Tool & Mold Inc

"Serving the industry since 1972"

Plastic Injection Molds

Custom Plastic Injection Mold Manufacturing

At Master Tool & Mold, we specialize in the design, engineering, and build of precision plastic injection molds for high-performance applications. Since 1972, our team has partnered with customers across the medical, automotive, consumer goods, and industrial sectors to deliver tooling that’s built to perform—and built to last.

Our team understands that the quality of your mold directly affects the efficiency of your production. That’s why we approach each build with a balance of skilled craftsmanship and modern machining. Using OKK vertical machining centers, sinker and wire EDM, and precision finishing tools, we routinely build multi-cavity molds with tight tolerances down to +/-.00025".

OKK CNC machine with a completed tool in front of it

We support a wide range of mold configurations, including:

Hot and cold runner systems
Single- and multi-cavity tools
Multi Shot Molds
Family Molds
Stack Molds
Unscrewing Molds
Insert and Overmolding

All tools are custom-tailored to match your press specs, resin requirements, and part design goals. Whether you're launching a new product or replacing a legacy mold, we deliver fast, reliable, production-ready solutions.

And we don’t stop at the build. We’re known for being responsive post-delivery, offering maintenance, repairs, and continuous support as your tooling is put to work.

If you need a partner that brings 50+ years of injection mold manufacturing experience, fast lead times, and dependable service—Master Tool & Mold is ready to deliver.