--- title: Custom Injection Mold Making Services | Injection Mold Maker description: State-of-the-art CNC machining centers and EDM technology combine with the skills of our experienced mold-makers to meet your tool build... --- [Skip to content](https://www.stelray.com/custom-injection-mold-making-services#main-content) [sales@stelray.com](mailto:sales@stelray.com) [+1(800) 735-2331](tel:1(800)%20735-2331) [![Stelray Plastic Products Logo](https://www.stelray.com/hs-fs/hubfs/Stelray%20Logo%202%20By%20FPS-1.jpg?width=2293&height=730&name=Stelray%20Logo%202%20By%20FPS-1.jpg "Stelray Plastic Products Logo")](https://www.stelray.com/) - [Home](https://www.stelray.com) - [About Us](https://www.stelray.com/who-are-we) Show submenu for About Us - [Who We Are](https://www.stelray.com/who-are-we) - [Sample Projects](https://www.stelray.com/plastic-injection-molding-sample-projects) - [Our Services](https://www.stelray.com/plastic-injection-molding-services) Show submenu for Our Services - [Injection Molding Services](https://www.stelray.com/plastic-injection-molding-services) - [Quality Control](https://www.stelray.com/quality-control-plastic-injection-molding) - [Post Mold Services](https://www.stelray.com/injection-molding-secondary-decorating-services) - [Mold Making Services](https://www.stelray.com/custom-injection-mold-making-services) - [Engineering and 3D Prototypes](https://www.stelray.com/plastic-part-design-engineering-services) - [Medical Injection Molding](https://www.stelray.com/medical-injection-molding) - [Ultrasonic Welding Service](https://www.stelray.com/ultrasonic-welding) - [Blogs](https://www.stelray.com/blog) - [Reference Tables](https://www.stelray.com/reference-tables) - [Careers](https://www.stelray.com/careers) - [Contact Us](https://www.stelray.com/contact) - [Home](https://www.stelray.com) - [About Us](https://www.stelray.com/who-are-we) Show submenu for About Us - [Who We Are](https://www.stelray.com/who-are-we) - [Sample Projects](https://www.stelray.com/plastic-injection-molding-sample-projects) - [Our Services](https://www.stelray.com/plastic-injection-molding-services) Show submenu for Our Services - [Injection Molding Services](https://www.stelray.com/plastic-injection-molding-services) - [Quality Control](https://www.stelray.com/quality-control-plastic-injection-molding) - [Post Mold Services](https://www.stelray.com/injection-molding-secondary-decorating-services) - [Mold Making Services](https://www.stelray.com/custom-injection-mold-making-services) - [Engineering and 3D Prototypes](https://www.stelray.com/plastic-part-design-engineering-services) - [Medical Injection Molding](https://www.stelray.com/medical-injection-molding) - [Ultrasonic Welding Service](https://www.stelray.com/ultrasonic-welding) - [Blogs](https://www.stelray.com/blog) - [Reference Tables](https://www.stelray.com/reference-tables) - [Careers](https://www.stelray.com/careers) - [Contact Us](https://www.stelray.com/contact) # Custom Plastic Injection Mold-Making Services ## Count on our Expert Engineering Team of Custom Mold Makers [Engineering & Prototyping Service](https://www.stelray.com/plastic-part-design-engineering-services) [Precision Injection Molding Service](https://www.stelray.com/plastic-injection-molding-services) [Secondary Operations Service](https://www.stelray.com/injection-molding-secondary-decorating-services) [Quality Assurance Service](https://www.stelray.com/quality-control-plastic-injection-molding) ## **Custom Plastic Injection Mold-Making Services** Stelray Plastic Products offers complete custom injection mold-making services and accepts existing mold transfers all managed by our [expert engineering team](https://www.stelray.com/plastic-part-design-engineering-services?__hstc=45788219.a617527bc2bc4c73555b8ddf9c331732.1706491492479.1706491492479.1706491492479.1&__hssc=45788219.1.1706491492479&__hsfp=2811050133). Our staff is committed to achieve optimum tooling performance and cost-effective savings. As custom mold makers, we offer in-house design and long-term mold service maintenance, as well as enhancements for new product needs. State-of-the-art CNC machining centers and EDM technology combine with the skills of our experienced mold-makers to meet your tool build and finish requirements. Our services consistently deliver molds that result in high-quality custom [plastic injection molding](https://www.stelray.com/custom-injection-mold-making-services?__hstc=45788219.a617527bc2bc4c73555b8ddf9c331732.1706491492479.1706491492479.1706491492479.1&__hssc=45788219.1.1706491492479&__hsfp=2811050133), as demonstrated by our outstanding supplier record working with an array of top U.S. and international brands. ![Richie Mouthguard Mold Over Shoulder-1](https://www.stelray.com/hs-fs/hubfs/Richie%20Mouthguard%20Mold%20Over%20Shoulder-1.jpeg?width=1524&height=1333&name=Richie%20Mouthguard%20Mold%20Over%20Shoulder-1.jpeg "Richie Mouthguard Mold Over Shoulder-1") ![Tool Room Overhead-1](https://www.stelray.com/hs-fs/hubfs/Tool%20Room%20Overhead-1.jpeg?width=2000&height=1718&name=Tool%20Room%20Overhead-1.jpeg "Tool Room Overhead-1") ## Full-Service Mold-Making Department As a full-service company, we offer in-house design, tooling and engineering support as part of our custom mold-making capabilities. All tooling design and manufacture is done by our team—for a complete custom application. Our engineering staff and machine technicians are experienced in commodity, engineering, to exotic resins, to help guide you in developing the mold best suited to accommodate the material selected for your project. ## Diverse Custom Mold-Making Services Our custom injection mold-making capabilities start with a comprehensive design review of the product and the pending mold layout to ensure product quality and tooling functions are addressed. We deliver high-precision conventional molds as well as modular molds (MUD units) through CNC 3D-machining, EDM, polishing and texturing. Among the backend services, we offer: - Complete tool history documentation - Comprehensive mold management - Inspection fixtures custom engineered and built in-house - Preventative maintenance schedule to stay ahead of damage and wear ![Mike Haas Setup 2 (warmer)](https://www.stelray.com/hs-fs/hubfs/Mike%20Haas%20Setup%202%20(warmer).jpeg?width=1335&height=1067&name=Mike%20Haas%20Setup%202%20(warmer).jpeg "Mike Haas Setup 2 (warmer)") ![StelrayPlastics-235-235-1](https://www.stelray.com/hs-fs/hubfs/StelrayPlastics-235-235-1.jpeg?width=2000&height=1684&name=StelrayPlastics-235-235-1.jpeg "StelrayPlastics-235-235-1") ## Custom Plastic Injection Molding Our mold-making service begins with in-house design and mold fabrication with quick-turn tooling to get your project to market quickly. We offer quick-turn soft tooling as well as high-production volume hardened tool steel molds in a wide selection of materials, including aluminum, stainless steel, and various grades of tool steel. Interested in what mold classification fits your manufacturing needs? [Click here to read our Mold Class Specification blog](https://www.stelray.com/blog/spi-mold-classification) Whether you have the need for a 3D prototype, are updating an existing component or are changing your manufacturing product altogether, a quality mold from Stelray is the solution. When beginning a new project, we always suggest ‘early supplier involvement’ to allow our customers leverage our years of plastics and molding experience, our network of industry supplier resources, and mold design and building expertise to ensure that your end product is completed quickly and efficiently. To learn more about our custom precision plastic injection mold-making processes and services, [get in touch](https://www.stelray.com/contact) with our team or [download](https://www.stelray.com/hubfs/Stelray%20Brochure.pdf) our brochure. ### Interested in Mold Transfer Program ### Stelray Plastic Products, Inc. Address: 50 Westfield Ave., Ansonia, CT 06401 Phone: [+ 1 (800) 735-2331](tel:0444486534) Email: [sales@stelray.com](mailto:sales@stelray.com) [Follow us on Facebook](https://www.facebook.com/StelrayPlasticProducts/) [Follow us on LinkedIn](https://www.linkedin.com/company/stelray-plastic-products/) ### Stelray Blogs - [A Great Past: The History of Plastic](https://www.stelray.com/blog/a-great-past-the-history-of-plastics) - [Resilience: The Story of Stelray](https://www.stelray.com/blog/the-story-of-stelray) - [Critical to Quality: Caring for Your Injection Mold](https://www.stelray.com/blog/critical-to-quality-caring-for-your-injection-mold) ### Pages - [Contact Us](https://www.stelray.com/contact) - [Reference Tables](https://www.stelray.com/reference-tables) - [Quality Control](https://www.stelray.com/quality-control-plastic-injection-molding) - [Contact Us](https://www.stelray.com/contact) - [Reference Tables](https://www.stelray.com/reference-tables) - [Quality Control](https://www.stelray.com/quality-control-plastic-injection-molding) ![Stelray certified by the FDA for Current Good Manufacturing Practice (CGMP)](https://www.stelray.com/hs-fs/hubfs/Stelray%20Website%20Optimzation%20202401/quality-certifications/GMP-footer-118x100px.jpg?noresize&width=118&height=100&name=GMP-footer-118x100px.jpg) ![ISO-9001 (002)-1](https://www.stelray.com/hs-fs/hubfs/ISO-9001%20(002)-1.png?noresize&width=963&height=1187&name=ISO-9001%20(002)-1.png) ![Stelray certified by the FDA as a Registered Medical Device Manufacturer](https://www.stelray.com/hs-fs/hubfs/Stelray%20Website%20Optimzation%20202401/quality-certifications/FDA-footer-118x100px.jpg?noresize&width=118&height=100&name=FDA-footer-118x100px.jpg) - [Privacy Policy](https://info.stelray.com/privacy-policy) - [Cookie Policy](https://info.stelray.com/cookie-policy) - [Sitemap](https://www.stelray.com/site-map) Copyright © 2026 Stelray Plastic Products, Inc. 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