With over 23 years of expertise in high-precision mold making and plastic injection, Goldwin has established itself as a reliable partner for clients seeking durable and high-performing molded parts. At the heart of every successful plastic product lies a well-built injection mold—your most critical investment in the production process.

What Are Plastic Injection Molds?

A plastic injection mold is a custom-built tool used to shape molten plastic into the final product design. After the design of a plastic part is finalized, the next step is the construction of a precision mold to bring that part to life. At Goldwin, we use advanced software, skilled mold designers, and high-end CNC machinery to manufacture injection molds that ensure consistent, high-quality results.

Why the Mold Matters

The mold is not only the largest upfront investment in any injection molding project—it is also the most important factor determining the accuracy, surface finish, and strength of the final parts. Working with a supplier that can handle in-house mold fabrication—like Goldwin—ensures single-source responsibility, improved communication, faster timelines, and better control over part quality.

In-House Mold Manufacturing

All molds produced by Goldwin are built in-house at our state-of-the-art facility. Our mold makers are experienced engineers and machinists who combine craftsmanship with modern CNC and CAD/CAM tools to construct robust and reliable tooling. By maintaining full control of the mold-making process, we eliminate third-party delays and deliver faster, more accurate results.

Why In-House Tooling Matters

Outsourcing your tooling may seem cost-effective upfront, but it often leads to unforeseen delays, higher revision costs, and quality issues. Choosing a supplier that handles tooling and production internally—like Goldwin—ensures accountability and consistency throughout the entire project.

Lifetime Mold Warranty

We treat every mold as a long-term asset for your business. That’s why we offer a lifetime warranty on all production molds we manufacture. As long as the mold is in production, we’ll stand behind its performance, giving you peace of mind and long-term value.

Why Are Plastic Injection Molds Expensive?

The cost of a plastic injection mold reflects the precision, complexity, and labor that goes into its creation. Each mold is a carefully engineered assembly of hardened tool steels or aerospace-grade aluminum, designed to withstand thousands—or even millions—of molding cycles.

Mold making is a specialized trade requiring years of experience and access to expensive equipment, such as 5-axis CNC machines, EDMs, and high-precision measuring tools. Depending on part complexity, building a mold can take anywhere from a few days to several weeks.

Types of Plastic Injection Molds

There are different types of molds designed to meet various production and part requirements. Whether you need single-cavity, multi-cavity, or family molds, we’ll guide you through the best options based on part complexity, volume, material, and production goals.

Let’s Build Your Next Injection Mold

At Goldwin, we don’t just deliver molded parts—we deliver solutions. If you’re sourcing a reliable supplier for plastic injection molds, our team is ready to support you at every stage—from DFM (Design for Manufacturability) to tool build, sampling, and production.

📩 Contact us today to get a quote and see how we can make your next injection molding project a success.